story: [Diana] and her brother [Casey] watched TV together. [Edward] was invited to watch too, because [Diana] is his sister. [Rose] took her daughter [Diana] to see a movie on Friday. She let her pick the movie and she enjoyed it very much. [Rudolph] told stories to his grandson [Edward].
query: ('Rudolph', 'Casey')
clean_story: [Rudolph] told stories to his grandson [Edward]. [Diana] and her brother [Casey] watched TV together. [Edward] was invited to watch too, because [Diana] is his sister.
proof_state: [{('Rudolph', 'grandson', 'Casey'): [('Rudolph', 'grandson', 'Edward'), ('Edward', 'brother', 'Casey')]}, {('Edward', 'brother', 'Casey'): [('Edward', 'sister', 'Diana'), ('Diana', 'brother', 'Casey')]}]