story: [Dana] asked her mother, [Cecilia], what they were going to have for lunch. [Stephen] walked his daughter [Dana] down the aisle on her wedding day. [April] and her sister [Cecilia] went to the mall. While at the mall [April] found the perfect Mother's Day gift for her mother [Nettie]. [Cecilia] bought her mother, [Nettie], a puppy for her birthday.
clean_story: [Stephen] walked his daughter [Dana] down the aisle on her wedding day. [Dana] asked her mother, [Cecilia], what they were going to have for lunch. [Cecilia] bought her mother, [Nettie], a puppy for her birthday.
proof_state: [{('Stephen', 'mother', 'Nettie'): [('Stephen', 'daughter', 'Dana'), ('Dana', 'grandmother', 'Nettie')]}, {('Dana', 'grandmother', 'Nettie'): [('Dana', 'mother', 'Cecilia'), ('Cecilia', 'mother', 'Nettie')]}]