story: [April]'s husband, [Benjamin], took his daughter, [Melba], to swimming class. [Richard] and his brother, [William] run a turtle farm. [William] went to the game with his sister [April].
query: ('Richard', 'Melba')
clean_story: [Richard] and his brother, [William] run a turtle farm. [William] went to the game with his sister [April]. [April]'s husband, [Benjamin], took his daughter, [Melba], to swimming class.
proof_state: [{('Richard', 'niece', 'Melba'): [('Richard', 'sister', 'April'), ('April', 'daughter', 'Melba')]}, {('April', 'daughter', 'Melba'): [('April', 'husband', 'Benjamin'), ('Benjamin', 'daughter', 'Melba')]}, {('Richard', 'sister', 'April'): [('Richard', 'brother', 'William'), ('William', 'sister', 'April')]}]
edge_types: ['brother', 'sister', 'husband', 'daughter']