story: [Leo] is a sibling of [Fletcher]. [Nancy] was playing in the sandbox with her brother [James]. [Leo] loves his mother [Nancy] very much.
query: ('Leo', 'James')
clean_story: [Leo] loves his mother [Nancy] very much. [Nancy] was playing in the sandbox with her brother [James].
proof_state: [{('Leo', 'uncle', 'James'): [('Leo', 'mother', 'Nancy'), ('Nancy', 'brother', 'James')]}]