story: [Dana] and his sister [Ellen] stood in line at the fair. [Rebbeca] and her sister [Ellen] were playing with dolls. Suddenly, [Ellen] decided that she needed to go check on her grandmother, [Michelle].
query: ('Rebbeca', 'Michelle')
clean_story: [Rebbeca] and her sister [Ellen] were playing with dolls. Suddenly, [Ellen] decided that she needed to go check on her grandmother, [Michelle].
proof_state: [{('Rebbeca', 'grandmother', 'Michelle'): [('Rebbeca', 'sister', 'Ellen'), ('Ellen', 'grandmother', 'Michelle')]}]