story: [Adam] has two beautiful grandchildren. One of them is named [Rebbeca]. [Rebbeca] has a strong brother named [John]. [Rebbeca] was talking about food with her sister [Tammy].
query: ('Adam', 'John')
clean_story: [Adam] has two beautiful grandchildren. One of them is named [Rebbeca]. [Rebbeca] has a strong brother named [John].
proof_state: [{('Adam', 'grandson', 'John'): [('Adam', 'granddaughter', 'Rebbeca'), ('Rebbeca', 'brother', 'John')]}]