story: [Jeffrey]'s dad [Christopher] is the CEO of the company. [William] met his brother [Jeffrey] for drinks after work.
query: ('William', 'Christopher')
clean_story: [William] met his brother [Jeffrey] for drinks after work. [Jeffrey]'s dad [Christopher] is the CEO of the company.
proof_state: [{('William', 'father', 'Christopher'): [('William', 'brother', 'Jeffrey'), ('Jeffrey', 'father', 'Christopher')]}]