story: [Carol] and her husband [Mark] went on a trip to the Netherlands last year. [Carol]'s son [Jason] loves all of his grandparents; but [Jason]'s favorite grandparent is [Rudolph]. [Carol] took her son [David] to school this morning because he missed the bus.
query: ('Mark', 'Rudolph')
clean_story: [Carol] and her husband [Mark] went on a trip to the Netherlands last year. [Carol]'s son [Jason] loves all of his grandparents; but [Jason]'s favorite grandparent is [Rudolph].
proof_state: [{('Mark', 'father-in-law', 'Rudolph'): [('Mark', 'wife', 'Carol'), ('Carol', 'father', 'Rudolph')]}, {('Carol', 'father', 'Rudolph'): [('Carol', 'son', 'Jason'), ('Jason', 'grandfather', 'Rudolph')]}]