Please answer the following question: Information:  - A tournament held in 1933 at the Chicago World's Fair spurred interest in the game. The Amateur Softball Association (ASA) of America (founded 1933) governs the game in the United States and sponsors annual sectional and World Series championships. The World Baseball Softball Confederation (WBSC) regulates rules of play in more than 110 countries, including the United States and Canada; before the WBSC was formed in 2013, the International Softball Federation filled this role. Women's fastpitch softball became a Summer Olympic sport in 1996, but it (and baseball) were dropped from the 2012 Games; they will be reinstated for the 2020 Games.  - Track and field is a sport which includes athletic contests established on the skills of running, jumping, and throwing. The name is derived from the sport's typical venue: a stadium with an oval running track enclosing a grass field where the throwing and jumping events take place. Track and field is categorised under the umbrella sport of athletics, which also includes road running, cross country running, and race walking.   - Irwin Field is a ballpark in Tyler , TX and home to the UT Tyler Patriots baseball team of the American Southwest Conference . The venue holds a capacity of 1,000 . The ballpark was named after local philanthropists Robert B. and Mary Irwin .  - Mississippi is a state in the southern region of the United States, with part of its southern border formed by the Gulf of Mexico. Its western border is formed by the Mississippi River.  - The American Southwest Conference (ASC) is a college athletic conference, founded in 1996, whose member schools compete in the NCAA's Division III. The schools are located in Texas, Louisiana, Arkansas and Mississippi. The conference competes in baseball, men's and women's basketball, men's and women's cross country, football, men's and women's golf, men's and women's soccer, softball, men's and women's tennis, men's and women's track and field and women's volleyball.  - Golf is a club and ball sport in which players use various clubs to hit balls into a series of holes on a course in as few strokes as possible.  - Basketball is a sport that is played by two teams of five players on a rectangular court. The objective is to shoot a ball through a hoop in diameter and mounted at a height of to backboards at each end of the court. The game was invented in 1891 by Dr. James Naismith, who would be the first basketball coach of the Kansas Jayhawks, one of the most successful programs in the game's history.   - Arkansas is a state located in the southeastern region of the United States. Its name is of Siouan derivation from the language of the Osage denoting their related kin, the Quapaw Indians. The state's diverse geography ranges from the mountainous regions of the Ozark and the Ouachita Mountains, which make up the U.S. Interior Highlands, to the densely forested land in the south known as the Arkansas Timberlands, to the eastern lowlands along the Mississippi River and the Arkansas Delta.  - Volleyball is a team sport in which two teams of six players are separated by a net. Each team tries to score points by grounding a ball on the other team's court under organized rules. It has been a part of the official program of the Summer Olympic Games since 1964.  - Texas is the second largest state in the United States by both area and population. Geographically located in the south central part of the country, Texas shares borders with the U.S. states of Louisiana to the east, Arkansas to the northeast, Oklahoma to the north, New Mexico to the west, and the Mexican states of Chihuahua, Coahuila, Nuevo León, and Tamaulipas to the southwest, while the Gulf of Mexico is to the southeast.  - Louisiana (or  ; Louisiana Creole: "Léta de la Lwizyàn") is a state located in the southern region of the United States. Louisiana is the 31st most extensive and the 25th most populous of the 50 United States. Its capital is Baton Rouge and largest city is New Orleans. Louisiana is the only state in the U.S. with political subdivisions termed parishes, which are the local government's equivalent to counties. The largest parish by population is East Baton Rouge Parish, and the largest by total area is Plaquemines. Louisiana is bordered by Arkansas to the north, Mississippi to the east, Texas to the west, and the Gulf of Mexico to the south.  - Baseball is a bat-and-ball game played between two teams of nine players each, who take turns batting and fielding.  - 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.    What entity does 'irwin field' has the relation 'instance of' with?
A:
stadium