story: [Otto] and his brother [Preston] went to the arcade. They had a wonderful time. [Otto] is very happy to have such a great daughter like [Tammy]. [Preston] was happy that his son [Mack] was doing well in college.
query: ('Preston', 'Tammy')
clean_story: [Otto] and his brother [Preston] went to the arcade. They had a wonderful time. [Otto] is very happy to have such a great daughter like [Tammy].
proof_state: [{('Preston', 'niece', 'Tammy'): [('Preston', 'brother', 'Otto'), ('Otto', 'daughter', 'Tammy')]}]