story: [Karen] is a sister of [Edward]. [Brian] called his brother [Edward] on the phone. He wanted to go out for some beers. [Mack] went to the wedding ceremony for his brother [Edward].
query: ('Mack', 'Karen')
clean_story: [Mack] went to the wedding ceremony for his brother [Edward]. [Karen] is a sister of [Edward].
proof_state: [{('Mack', 'sister', 'Karen'): [('Mack', 'brother', 'Edward'), ('Edward', 'sister', 'Karen')]}]