story: [Alfred] had a wife named [Lisbeth] [Alfred] went to the park with his mother, [Sandra], and his son, [Willie]. [Rose] was celebrating her birthday with her mother [Sandra].
query: ('Rose', 'Willie')
clean_story: [Rose] was celebrating her birthday with her mother [Sandra]. [Alfred] went to the park with his mother, [Sandra], and his son, [Willie].
proof_state: [{('Rose', 'nephew', 'Willie'): [('Rose', 'brother', 'Alfred'), ('Alfred', 'son', 'Willie')]}, {('Rose', 'brother', 'Alfred'): [('Rose', 'mother', 'Sandra'), ('Sandra', 'son', 'Alfred')]}]