story: [Alfred] asked his wife, [Lucille], to save money for a vacation. [Lucille]'s father, [Christopher], chipped in some money.
query: ('Alfred', 'Christopher')
clean_story: [Alfred] asked his wife, [Lucille], to save money for a vacation. [Lucille]'s father, [Christopher], chipped in some money.
proof_state: [{('Alfred', 'father-in-law', 'Christopher'): [('Alfred', 'wife', 'Lucille'), ('Lucille', 'father', 'Christopher')]}]