story: [Minnie] has a son named [Dana]. [Dana] and his uncle [Preston] went fishing yesterday. They caught many trout. [Minnie] took her son [John] to the football game.
query: ('Minnie', 'Preston')
clean_story: [Minnie] has a son named [Dana]. [Dana] and his uncle [Preston] went fishing yesterday. They caught many trout.
proof_state: [{('Minnie', 'brother', 'Preston'): [('Minnie', 'son', 'Dana'), ('Dana', 'uncle', 'Preston')]}]