story: [Dwight] is taking his son [David] out for coffee. [David] is really looking forward to a visit from his uncle [Christopher].
query: ('Dwight', 'Christopher')
clean_story: [Dwight] is taking his son [David] out for coffee. [David] is really looking forward to a visit from his uncle [Christopher].
proof_state: [{('Dwight', 'brother', 'Christopher'): [('Dwight', 'son', 'David'), ('David', 'uncle', 'Christopher')]}]