story: [Sandra] is taking a trip to see her sister [Marian]. [Michelle] took her son [Thomas] to school this morning because he missed the bus. [Marian] is looking for a good gift for her sister [Michelle].
query: ('Sandra', 'Thomas')
clean_story: [Sandra] is taking a trip to see her sister [Marian]. [Marian] is looking for a good gift for her sister [Michelle]. [Michelle] took her son [Thomas] to school this morning because he missed the bus.
proof_state: [{('Sandra', 'nephew', 'Thomas'): [('Sandra', 'sister', 'Michelle'), ('Michelle', 'son', 'Thomas')]}, {('Sandra', 'sister', 'Michelle'): [('Sandra', 'sister', 'Marian'), ('Marian', 'sister', 'Michelle')]}]