user: Question: What conference did the player with the position of RB play in?
Columns: ['Original NFL team', 'Player', 'Pos.', 'College', 'Conf.']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Denver Broncos', 'John Amos Category:Articles with hCards', 'RB', 'Colorado State', 'Ind.']
SQL:

assistant: SELECT "Conf." FROM "Table" WHERE "Pos." = 'RB';