story: [Dwight] asked his father [Jason] if he could have a video game and he said okay. [Dwight] is an engineer who loves to take his son [David] to the science museum to help him learn about the world
query: ('Jason', 'David')
clean_story: [Dwight] asked his father [Jason] if he could have a video game and he said okay. [Dwight] is an engineer who loves to take his son [David] to the science museum to help him learn about the world
proof_state: [{('Jason', 'grandson', 'David'): [('Jason', 'son', 'Dwight'), ('Dwight', 'son', 'David')]}]