story: [Lisa] and her husband [Peter] went shopping for Christmas presents one afternoon at the local mall. [Rudolph] held his Granddaughter [Michelle] for the first time, and his son [Peter] watched with excitement [Peter] and his son [Erik] went to the skating rink.
query: ('Erik', 'Rudolph')
clean_story: [Peter] and his son [Erik] went to the skating rink. [Rudolph] held his Granddaughter [Michelle] for the first time, and his son [Peter] watched with excitement
proof_state: [{('Erik', 'grandfather', 'Rudolph'): [('Erik', 'father', 'Peter'), ('Peter', 'father', 'Rudolph')]}, {('Peter', 'father', 'Rudolph'): [('Peter', 'daughter', 'Michelle'), ('Michelle', 'grandfather', 'Rudolph')]}]