story: [John] was enjoying the delicious meal prepared by his mother [Marian]. [Valerie] was playing tag with her father [Stanley]. [Valerie] and her sister [Marian] are the only children in their family.
query: ('John', 'Stanley')
clean_story: [John] was enjoying the delicious meal prepared by his mother [Marian]. [Valerie] and her sister [Marian] are the only children in their family. [Valerie] was playing tag with her father [Stanley].
proof_state: [{('John', 'grandfather', 'Stanley'): [('John', 'mother', 'Marian'), ('Marian', 'father', 'Stanley')]}, {('Marian', 'father', 'Stanley'): [('Marian', 'sister', 'Valerie'), ('Valerie', 'father', 'Stanley')]}]