story: [Jeffrey] is Grandson of [Gabrielle] and brother of [Lucille]
query: ('Lucille', 'Gabrielle')
clean_story: [Jeffrey] is Grandson of [Gabrielle] and brother of [Lucille]
proof_state: [{('Lucille', 'grandmother', 'Gabrielle'): [('Lucille', 'brother', 'Jeffrey'), ('Jeffrey', 'grandmother', 'Gabrielle')]}]