story: [Preston] is a man with a brother named [Paul]. [Edward] and his sister [Karen] went to the park. [Edward] went to the park with his father, [Preston].
query: ('Edward', 'Paul')
clean_story: [Edward] went to the park with his father, [Preston]. [Preston] is a man with a brother named [Paul].
proof_state: [{('Edward', 'uncle', 'Paul'): [('Edward', 'father', 'Preston'), ('Preston', 'brother', 'Paul')]}]