story: [Preston] is a man with a son named [Jaime]. [Jaime] was delayed picking up his sister, [Stacy], from class. Thankfully, [Melissa]'s mom, [Stacy], was already there.
query: ('Jaime', 'Melissa')
clean_story: [Jaime] was delayed picking up his sister, [Stacy], from class. Thankfully, [Melissa]'s mom, [Stacy], was already there.
proof_state: [{('Jaime', 'mother', 'Melissa'): [('Jaime', 'sister', 'Stacy'), ('Stacy', 'mother', 'Melissa')]}]