story: [Otto] invited his daughter [Tammy] to dinner. [Tammy]'s husband [William] joined her. [Ellen] called [Tammy], her sister, to see if she wanted to go out to eat.
query: ('William', 'Otto')
clean_story: [Otto] invited his daughter [Tammy] to dinner. [Tammy]'s husband [William] joined her.
proof_state: [{('William', 'father-in-law', 'Otto'): [('William', 'wife', 'Tammy'), ('Tammy', 'father', 'Otto')]}]