Please answer the following question: Information:  - The Seattle Seahawks are a professional American football franchise based in Seattle, Washington. The Seahawks compete in the National Football League (NFL) as a member club of the league's National Football Conference (NFC) West division. The Seahawks joined the NFL in 1976 as an expansion team, along with the Tampa Bay Buccaneers. The Seahawks are owned by Microsoft co-founder Paul Allen and are currently coached by Pete Carroll. Since 2002, the Seahawks have played their home games at CenturyLink Field (formerly Qwest Field), located south of downtown Seattle. The Seahawks previously played home games in the Kingdome (19761999) and Husky Stadium (1994, 20002001).  - The stadium most recently underwent a $280 million renovation that was completed in 2013. Its U-shaped design was specifically oriented (18.167° south of due east) to minimize glare from the early afternoon sun in the athletes' eyes. The open end overlooks scenic Lake Washington and the Cascade Mountains, including Mount Rainier. Prior to the 201113 renovation, its total capacity of 72,500 made it the largest stadium in the Pacific Northwest and the 23rd largest in college football.  - The Tampa Bay Buccaneers (often shortened as the Bucs) are a professional American football franchise based in Tampa, Florida. The Buccaneers currently compete in the National Football League (NFL) as a member team of the National Football Conference (NFC) South division. Along with the Seattle Seahawks, the team joined the NFL in as an expansion team. The Bucs played their first season in the American Football Conference (AFC) West division as part of the 1976 expansion plan, whereby each new franchise would play every other franchise over the first two years. After the season, the club switched conferences with the Seahawks and became a member of the NFC Central division. During the 2002 league realignment, the Bucs joined three former NFC West teams to form the NFC South. The club is owned by the Glazer family, and plays its home games at Raymond James Stadium in Tampa.  - William Patrick Sandifer ( born January 5 , 1952 in Quantico , Virginia ) is a former professional American football player who played defensive lineman for five seasons for the San Francisco 49ers and Seattle Seahawks .  - The San Francisco 49ers are a professional American football team located in the San Francisco Bay Area. They compete in the National Football League (NFL) as a member of the league's National Football Conference (NFC) West division. The team currently plays its home games at Levi's Stadium in Santa Clara, California, located southeast of San Francisco in the heart of Silicon Valley. Since 1988, the 49ers have been headquartered in Santa Clara.  - Silicon Valley is a nickname for the southern portion of the San Francisco Bay Area, in the northern part of the U.S. state of California. The "valley" in its name refers to the Santa Clara Valley in Santa Clara County, which includes the city of San Jose and surrounding cities and towns, where the region has been traditionally centered. The region has expanded to include the southern half of the San Francisco Peninsula in San Mateo County, and southern portions of the East Bay in Alameda County.  - The National Football League (NFL) is a professional American football league consisting of 32 teams, divided equally between the National Football Conference (NFC) and the American Football Conference (AFC). The NFL is one of the four major professional sports leagues in North America, and the highest professional level of American football in the world. The NFL's 17-week regular season runs from the week after Labor Day to the week after Christmas, with each team playing 16 games and having one bye week. Following the conclusion of the regular season, six teams from each conference (four division winners and two wild card teams) advance to the playoffs, a single-elimination tournament culminating in the Super Bowl, played between the champions of the NFC and AFC.  - The San Francisco Bay Area (referred to locally as the Bay Area) is a populous region surrounding the San Francisco and San Pablo estuaries in Northern California. The region encompasses the major cities and metropolitan areas of San Jose, San Francisco, and Oakland, along with smaller urban and rural areas. The Bay Area's nine counties are Alameda, Contra Costa, Marin, Napa, San Francisco, San Mateo, Santa Clara, Solano, and Sonoma. Home to approximately 7.65 million people, the nine-county Bay Area contains many cities, towns, airports, and associated regional, state, and national parks, connected by a network of roads, highways, railroads, bridges, tunnels and commuter rail. The combined statistical area of the region is the second-largest in California (after the Greater Los Angeles area), the fifth-largest in the United States, and the 43rd-largest urban area in the world.  - Levi's Stadium is a football stadium located in Santa Clara, California, in the San Francisco Bay Area. It has served as the home of the San Francisco 49ers of the National Football League since 2014. The stadium is located approximately from San Francisco.  - The Kingdome (officially King County Multipurpose Domed Stadium) was a multi-purpose stadium in Seattle's SoDo neighborhood. Owned and operated by King County, the Kingdome opened in 1976 and was best known as the home stadium of the Seattle Seahawks of the National Football League (NFL), the Seattle Mariners of Major League Baseball (MLB), and the Seattle SuperSonics of the National Basketball Association (NBA). The stadium served as both the home outdoor and indoor venue for the Seattle Sounders of the North American Soccer League (NASL) and hosted numerous amateur sporting events, concerts, and other events. The Kingdome measured 660 feet wide from its inside walls.  - The 2010 United States Census, (known as "Census 2010"), is the twenty-third and currently most recent United States national census. National Census Day, the reference day used for the census, was April 1, 2010. As part of a drive to increase the count's accuracy, 635,000 temporary enumerators were hired. The population of the United States was counted as 308,745,538, a 9.7% increase from the 2000 Census.  - American football, referred to as football in the United States and Canada, and also known as gridiron, is a sport played by two teams of eleven players on a rectangular field with goalposts at each end. The offense, the team with control of the oval-shaped football, attempts to advance down the field by running with or passing the ball, while the team without control of the ball, the defense, aims to stop their advance and take control of the ball for themselves. The offense must advance at least ten yards in four downs, or plays, or else they turn over the football to the opposing team; if they succeed, they are given a new set of four downs. Points are primarily scored by advancing the ball into the opposing team's end zone for a touchdown or kicking the ball through the opponent's goalposts for a field goal. The team with the most points at the end of a game wins.  - San Francisco (SF) (Spanish for Saint Francis) officially the City and County of San Francisco, is the cultural, commercial, and financial center of Northern California. It is the birthplace of the United Nations. Located at the north end of the San Francisco Peninsula, San Francisco is about in area, making it the smallest countyand the only consolidated city-countywithin the state of California. With a density of about 18,451 people per square mile (7,124 people per km), San Francisco is the most densely settled large city (population greater than 200,000) in California and the second-most densely populated major city in the United States after New York City. San Francisco is the fourth-most populous city in California, after Los Angeles, San Diego, and San Jose, and the 13th-most populous city in the United Stateswith a census-estimated 2015 population of 864,816. The city and its surrounding areas are known as the San Francisco Bay Area, and are a part of the larger OMB-designated San Jose-San Francisco-Oakland combined statistical area, the fifth most populous in the nation with an estimated population of 8.7 million.  - Santa Clara is a city in Santa Clara County, California, named after the Spanish mission that was established there in 1777. The city's population was 116,468 at the 2010 United States Census, making it the ninth-most populous city in the San Francisco Bay Area. Located southeast of San Francisco, the city was founded in 1777 and incorporated in 1852. The city is the site of the eighth of 21 California missions, Mission Santa Clara de Asís, and was named after the mission. The Mission and Mission Gardens are located on the grounds of Santa Clara University. Saint Clare is the patron saint of Santa Clara.  - Hawks are a group of medium-sized diurnal birds of prey of the family Accipitridae which are widely distributed and varying greatly in size.  - Microsoft Corporation (commonly referred to as Microsoft or MS) is an American multinational technology company headquartered in Redmond, Washington, that develops, manufactures, licenses, supports and sells computer software, consumer electronics and personal computers and services. Its best known software products are the Microsoft Windows line of operating systems, Microsoft Office office suite, and Internet Explorer and Edge web browsers. Its flagship hardware products are the Xbox video game consoles and the Microsoft Surface tablet lineup. As of 2016, it was the world's largest software maker by revenue, and one of the world's most valuable companies.  - CenturyLink Field is a multi-purpose stadium in Seattle, Washington, United States. It is the home field for the Seattle Seahawks of the National Football League (NFL) and Seattle Sounders FC of Major League Soccer (MLS). Originally called Seahawks Stadium, it became Qwest Field on June 23, 2004, when telecommunications carrier Qwest acquired the naming rights. It received its current name in June 2011 after Qwest's acquisition by CenturyLink. It is a modern facility with views of the Downtown Seattle skyline and can seat 69,000 people. The complex also includes the Event Center with the WaMu Theater, a parking garage, and a public plaza. The venue hosts concerts, trade shows, and consumer shows along with sporting events. Located within a mile (1.6 km) of Downtown Seattle, the stadium is accessible by multiple freeways and forms of mass transit.   - Peter Clay Carroll (born September 15, 1951) is an American football coach who is the head coach and executive vice president of the Seattle Seahawks of the National Football League (NFL). He is a former head coach of the New York Jets, New England Patriots, and the USC Trojans of the University of Southern California (USC). Carroll is one of only three football coaches who have won both a Super Bowl and a college football national championship. Carroll is the oldest head coach currently working in the NFL.  - An expansion team is a brand new team in a sports league, usually from a city that has not hosted a team in that league before, formed with the intention of satisfying the demand for a local team from a population in a new area. Sporting leagues also hope that the expansion of their competition will grow the popularity of the sport generally. The term is most commonly used in reference to the North American major professional sports leagues but is applied to sports leagues in other countries with a closed franchise system of league membership. The term comes from the expansion of the sport into new areas. That sometimes results in the payment of an expansion fee to the league by the new team and an expansion draft to populate the new roster.  - Quantico (formerly Potomac) is a town in Prince William County, Virginia. As of the 2010 United States Census, Quantico had a population of 480.  - Downtown is the central business district of Seattle, Washington. It is fairly compact compared with other city centers on the West Coast of the United States because of its geographical situation. It is hemmed in on the north and east by hills, on the west by Elliott Bay, and on the south by reclaimed land that was once tidal flats. It is bounded on the north by Denny Way, beyond which are Lower Queen Anne (sometimes known as "Uptown"), Seattle Center, and South Lake Union; on the east by Broadway Avenue, beyond which is Capitol Hill to the northeast and the Central District to the east; on the south by Dearborn Avenue, beyond which is Sodo; and on the west by Elliott Bay, which is part of Puget Sound (an inlet of the Pacific Ocean).  - The National Football Conference (NFC) is one of the two conferences of the National Football League (NFL), the highest professional level of American football in the United States. This conference and its counterpart, the American Football Conference (AFC), currently contain 16 teams each, making up the 32 teams of the NFL. Both conferences were created as part of the 1970 merger with the rival American Football League (AFL), with all ten of the former AFL teams and three NFL teams forming the AFC while the remaining thirteen NFL clubs formed the NFC. A series of league expansions and division realignments have occurred since the merger, thus making the current total 16 clubs per each conference.  - Paul Gardner Allen (born January 21, 1953) is an American business magnate, investor and philanthropist. He is best known as the co-founder of Microsoft, alongside Bill Gates. As of August 2016, he was estimated to be the 40th richest person in the world, with an estimated wealth of $18.6 billion.    After reading the paragraphs above, we are interested in knowing the entity with which 'bill sandifer' exhibits the relationship of 'given name'. Find the answer from the choices below.  Choices: - allen  - america  - an  - april  - are  - august  - bill  - carroll  - clara  - clare  - diego  - elliott  - else  - florida  - francis  - francisco  - january  - jose  - king  - levi  - line  - many  - pablo  - paul  - per  - peter  - prince  - redmond  - u .  - virginia  - washington  - william
A:
bill