table: [['institution', 'nickname', 'location', 'founded', 'type', 'enrollment', 'joined', 'left'], ['university of cincinnati', 'bearcats', 'cincinnati , ohio', '1819', 'public', '41357', '1991', '1995'], ['university of dayton', 'flyers', 'dayton , ohio', '1850', 'private', '11186', '1993', '1995'], ['depaul university', 'blue demons', 'chicago , illinois', '1898', 'private', '24966', '1991', '1995'], ['marquette university', 'golden eagles', 'milwaukee , wisconsin', '1881', 'private', '12002', '1991', '1995'], ['university of memphis', 'tigers', 'memphis , tennessee', '1912', 'public', '22365', '1991', '1995'], ['saint louis university', 'billikens', 'st louis , missouri', '1818', 'private', '13785', '1991', '1995']]
ref: 5 out of the 6 Institution that were in the Great Midwest Conference Joined the Conference in 1991
template: 5 out of the 6 [ENT] that were in the [ENT] [ENT] the [ENT] in [ENT]