story: [Bernard] went to the wedding ceremony for his brother [David]. [David] and his sister [Mary] went to the park. [David]'s grandfather, [Adam], asked the boy what he wanted for Christmas. [David] told him he wanted a remote controlled car.
query: ('Bernard', 'Adam')
clean_story: [Bernard] went to the wedding ceremony for his brother [David]. [David]'s grandfather, [Adam], asked the boy what he wanted for Christmas. [David] told him he wanted a remote controlled car.
proof_state: [{('Bernard', 'grandfather', 'Adam'): [('Bernard', 'brother', 'David'), ('David', 'grandfather', 'Adam')]}]