story: [Marian] invited her mother [Donna], her brother [Young] and her daughter [Tammy] over to watch the football game on Sunday.
clean_story: [Marian] invited her mother [Donna], her brother [Young] and her daughter [Tammy] over to watch the football game on Sunday.
proof_state: [{('Young', 'mother', 'Donna'): [('Young', 'sister', 'Marian'), ('Marian', 'mother', 'Donna')]}, {('Marian', 'mother', 'Donna'): [('Marian', 'daughter', 'Tammy'), ('Tammy', 'grandmother', 'Donna')]}]