Question: Tobin Bo Gunnar Gerhart held the Stanford record for most rushing yards in a season until the record was broke by an American football running back holds the NCAA record for what?
{'answer': 'most all-purpose yards in a season', 'supporting_facts': [['Toby Gerhart', 0], ['Toby Gerhart', 6], ['Christian McCaffrey', 0], ['Christian McCaffrey', 3]]}