1957 NCAA Men's Division I Basketball Tournament
{'<entity_0>': "1957 NCAA Men's Division I Basketball Tournament", '<entity_1>': "men's college basketball", '<entity_2>': '1957', '<entity_3>': '23'}
[["1957 NCAA Men's Division I Basketball Tournament", 'competition class', "men's college basketball"], ["1957 NCAA Men's Division I Basketball Tournament", 'point in time', '1957'], ["1957 NCAA Men's Division I Basketball Tournament", 'number of participants', '23']]
The <entity_0> involved <entity_3> schools playing in single-elimination play to determine the national champion of <entity_1> in the NCAA University Division, known since 1973 as NCAA Division I. The 19th edition of the tournament began on <entity_2>, and ended with the championship game on <entity_3> in Kansas City, Missouri.
['sports season']