story: [Michelle] went out to lunch with her sister [Marian] and her son [Paul]. [Marian] took her sister [Valerie] out for dinner to celebrate her birthday.
query: ('Valerie', 'Paul')
clean_story: [Marian] took her sister [Valerie] out for dinner to celebrate her birthday. [Michelle] went out to lunch with her sister [Marian] and her son [Paul].
proof_state: [{('Valerie', 'nephew', 'Paul'): [('Valerie', 'sister', 'Michelle'), ('Michelle', 'son', 'Paul')]}, {('Valerie', 'sister', 'Michelle'): [('Valerie', 'sister', 'Marian'), ('Marian', 'sister', 'Michelle')]}]