story: [Connie] and her two sisters, [Karen] and [Darnell], took a cake to [Marian], [Connie]'s mother.
query: ('Karen', 'Marian')
clean_story: [Connie] and her two sisters, [Karen] and [Darnell], took a cake to [Marian], [Connie]'s mother.
proof_state: [{('Karen', 'mother', 'Marian'): [('Karen', 'sister', 'Darnell'), ('Darnell', 'mother', 'Marian')]}, {('Darnell', 'mother', 'Marian'): [('Darnell', 'sister', 'Connie'), ('Connie', 'mother', 'Marian')]}]