Please answer the following question: Information:  - Canadian football is a form of gridiron football played in Canada in which two teams of 12 players each compete for territorial control of a field of play long and wide attempting to advance a pointed prolate spheroid ball into the opposing team's scoring area (end zone).  - The Super Bowl is the annual championship game of the National Football League (NFL), the highest level of professional American football in the world. The game is the culmination to a season that begins in the late summer of the previous calendar year. Normally, Roman numerals are used to identify each game, rather than the year in which it is held. For example, Super Bowl I was played on January 15, 1967, following the 1966 regular season. The single exception to this rule is Super Bowl 50, which was played on February 7, 2016, following the 2015 regular season. The next game, Super Bowl LI, scheduled for February 5, 2017, will follow the 2016 regular season.  - The Philadelphia Eagles are a professional American football franchise based in Philadelphia, Pennsylvania. The Eagles compete in the National Football League (NFL) as a member club of the league's National Football Conference (NFC) East division.  - The Masters Tournament, also known as The Masters or The US Masters, is one of the four major championships in professional golf. The Masters is scheduled for the first full week of April, and it is the first of the majors to be played each year. Unlike the other major championships, the Masters is held each year at the same location, Augusta National Golf Club, a private golf club in the city of Augusta, Georgia, USA. The Masters was started by Clifford Roberts and Bobby Jones. Jones designed Augusta National with course architect Alister MacKenzie. The tournament is an official money event on the PGA Tour, the European Tour, and the Japan Golf Tour. The field of players is smaller than those of the other major championships because it is an invitational event, held by the Augusta National Golf Club.  - ESPN (originally an initialism for Entertainment and Sports Programming Networks) is a U.S.-based global cable and satellite sports television channel owned by ESPN Inc., a joint venture between The Walt Disney Company (which operates the network) and the Hearst Corporation (which owns a 20% minority share).  - Christmas or Christmas Day (meaning "Christ's Mass") is an annual festival commemorating the birth of Jesus Christ, observed most commonly on December 25 as a religious and cultural celebration among billions of people around the world. A feast central to the Christian liturgical year, it is prepared for by the season of Advent or the Nativity Fast and initiates the season of Christmastide, which historically in the West lasts twelve days and culminates on Twelfth Night; in some traditions, Christmastide includes an Octave. The traditional Christmas narrative, the Nativity of Jesus, delineated in the New Testament says that Jesus was born in Bethlehem, in accordance with messianic prophecies; when Joseph and Mary arrived in the city, the inn had no room and so they were offered a stable where the Christ Child was soon born, with angels proclaiming this news to shepherds who then disseminated the message furthermore. Christmas Day is a public holiday in many of the world's nations, is celebrated religiously by the vast majority of Christians, as well as culturally by a number of non-Christian people, and is an integral part of the holiday season, while some Christian groups reject the celebration. In several countries, celebrating Christmas Eve on December 24 has the main focus rather than December 25, with gift-giving and sharing a traditional meal with the family.  - The Northeastern United States, also referred to as the American Northeast or simply the Northeast, is a geographical region of the United States of America bordered to the north by Canada, to the east by the Atlantic Ocean, to the south by the Southern United States, and to the west by the Midwestern United States. The Northeast is one of the four regions defined by the Census Bureau for the collection and analysis of statistics. The Census Bureau-defined region has a total area of with of that being land mass. Though lacking a unified cultural identity, the Northeastern region is the nation's most economically developed, densely populated, and culturally diverse region. Of the nation's four census regions, the Northeast is the second most urban, with 85 percent of its population residing in urban areas, led by the West with 90 percent.  - George Allen "Pat" Summerall (May 10, 1930  April 16, 2013) was an American football player and television sportscaster, having worked at CBS, Fox, and ESPN. In addition to football, he also announced major golf and tennis events. In total, he announced 16 Super Bowls on network television (more than any other announcer), 26 Masters Tournaments, and 21 US Opens. He also contributed to 10 Super Bowl broadcasts on CBS Radio as a pregame host or analyst.  - 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.  - Philadelphia is the largest city in the Commonwealth of Pennsylvania and the fifth-most populous city in the United States, with an estimated population of 1,567,442 and more than 6 million in the seventh-largest metropolitan statistical area, . Philadelphia is the economic and cultural anchor of the Delaware Valleya region located in the Northeastern United States at the confluence of the Delaware and Schuylkill rivers with 7.2 million people residing in the eighth-largest combined statistical area in the United States.  - 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.  - Tennis is a racket sport that can be played individually against a single opponent (singles) or between two teams of two players each (doubles). Each player uses a tennis racket that is strung with cord to strike a hollow rubber ball covered with felt over or around a net and into the opponent's court. The object of the game is to play the ball in such a way that the opponent is not able to play a valid return. The player who is unable to return the ball will not gain a point, while the opposite player will.  - Thomas Jefferson `` Tom '' Brookshier ( December 16 , 1931 -- January 29 , 2010 ) was an American professional football player , coach and sportscaster . He was a starting defensive back for the Philadelphia Eagles for seven seasons from 1953 to 1961 . He later paired with Pat Summerall on the primary broadcast team for National Football League ( NFL ) games on CBS during the 1970s .  - In American football and Canadian football, defensive backs (DBs) are the players on the defensive team who take positions somewhat back from the line of scrimmage; they are distinguished from the defensive line players and linebackers, who take positions directly behind or close to the line of scrimmage. The defensive backs, in turn, generally are classified into several different specialized positions:    Given the paragraphs above, decide what entity has the relation 'occupation' with 'american football player'.
Answer:
tom brookshier