Question: when did ohio state join the big 10
[{'answer': '1912'}, {'provenance': [{'wikipedia_id': '47761259', 'title': '1912 Ohio State Buckeyes football team', 'section': 'Section::::Abstract.', 'start_paragraph_id': 1, 'end_paragraph_id': 1, 'meta': {'evidence_span': ['he 1912 Ohio State Buckeyes football team represented Ohio State University in the 1912 college football season. 1912 was the year that Ohio State was accepted into the Western Conference, now kno', '1912 was the year that Ohio State was accepted into the Western Conference, now known as the Big Ten Conference', 'The 1912 Ohio State Buckeyes football team represented Ohio State University in the 1912 college football season.']}}]}, {'provenance': [{'wikipedia_id': '78358', 'title': 'Big Ten Conference', 'section': "Section::::Men's basketball.\n", 'start_paragraph_id': 114, 'end_paragraph_id': 114, 'meta': {'evidence_span': ['Big Ten teams have also experienced success in the postseason NIT. Since 1974, 13 Big Ten teams have made it to the championship game, winning nine championships. Michigan, Ohio State, Penn State, and Minnesota have won two NIT championships, while Indiana and Purdue have won one each. Two oth', 'Big Ten teams have also experienced success in the postseason NIT. Since 1974, 13 Big Ten teams have made it to the championship game, winning nine championships. Michigan, Ohio State, Penn State, and Minnesota have won two NIT championships, wh']}}]}]