story: [Nancy] loves to make cookies for her son. His name is [Leo]. [Fletcher] and [Maria], a married couple, took [Maria]'s mother [Nancy] out to lunch for her birthday.
query: ('Nancy', 'Fletcher')
clean_story: [Fletcher] and [Maria], a married couple, took [Maria]'s mother [Nancy] out to lunch for her birthday.
proof_state: [{('Nancy', 'son-in-law', 'Fletcher'): [('Nancy', 'daughter', 'Maria'), ('Maria', 'husband', 'Fletcher')]}]