story: After leaving his mom [Myrna]'s house [William] called his sister [Anna].
query: ('Myrna', 'Anna')
clean_story: After leaving his mom [Myrna]'s house [William] called his sister [Anna].
proof_state: [{('Myrna', 'daughter', 'Anna'): [('Myrna', 'son', 'William'), ('William', 'sister', 'Anna')]}]