story: [Dwight] always enjoyed playing with his sister, [Myrna], when they were growing up. [Myrna] sat anxiously in the airport terminal, waiting to see her son [William] walk through the gate.
query: ('Dwight', 'William')
clean_story: [Dwight] always enjoyed playing with his sister, [Myrna], when they were growing up. [Myrna] sat anxiously in the airport terminal, waiting to see her son [William] walk through the gate.
proof_state: [{('Dwight', 'nephew', 'William'): [('Dwight', 'sister', 'Myrna'), ('Myrna', 'son', 'William')]}]