story: [Nancy] takes her son [Jess] to the park every Saturday. [Jess] loves his grandmother, [Michelle]. She loves him, too. [Nancy] drove her son [Robert] to his soccer game.
query: ('Nancy', 'Michelle')
clean_story: [Nancy] takes her son [Jess] to the park every Saturday. [Jess] loves his grandmother, [Michelle]. She loves him, too.
proof_state: [{('Nancy', 'mother', 'Michelle'): [('Nancy', 'son', 'Jess'), ('Jess', 'grandmother', 'Michelle')]}]