[['institution', 'location', 'team nickname', 'joined tschl', 'home arena', 'capacity', 'team website'], ['university of akron', 'akron , oh', 'zips', '2010', 'center ice sports complex', '900', 'zips hockey'], ['university of cincinnati', 'cincinnati , oh', 'bearcats', '2010', 'cincinnati gardens', '10208', 'cincinnati hockey'], ['university of dayton', 'dayton , oh', 'flyers', '2010', 'kettering rec center', '700', 'dayton hockey'], ['indiana university of pennsylvania', 'indiana , pa', 'crimson hawks', '2010', 's&t bank arena', '1000', 'iup hockey'], ['ohio university', 'athens , oh', 'bobcats', '2011', 'bird arena', '2000', 'ohio hockey'], ['university of toledo', 'toledo , oh', 'rockets', '2010', 'team toledo ice house', '1100', 'toledo hockey'], ['university of pittsburgh', 'pittsburgh , pa', 'panthers', '2010', 'bladerunners harmarville', '1200', 'pitt hockey'], ['west virginia university', 'morgantown , wv', 'mountaineers', '2010', 'morgantown municipal ice arena', '500', 'wvu hockey']]
there are 2 Institution from Pennsylvania which makes up 25% of the League
there are 2 [ENT] from [ENT] which makes up 25% of the [ENT]