story: [Karen] took her sister [Stacy] out for dinner to celebrate her birthday. [Karen] went on a vacation with her brother [Edward]. [Karen] took her father [Preston] out to dinner for Father's Day.
query: ('Stacy', 'Preston')
clean_story: [Karen] took her sister [Stacy] out for dinner to celebrate her birthday. [Karen] took her father [Preston] out to dinner for Father's Day.
proof_state: [{('Stacy', 'father', 'Preston'): [('Stacy', 'sister', 'Karen'), ('Karen', 'father', 'Preston')]}]