story: [Michael] wants to throw a surprise party for his brother [David]. [Michael]'s brother [Richard] helps pick the decorations. [Richard] went to the store with his brother, [Jason]. [David]'s dad [Mark] is the CEO of the company.
query: ('Richard', 'Mark')
clean_story: [Michael] wants to throw a surprise party for his brother [David]. [Michael]'s brother [Richard] helps pick the decorations. [David]'s dad [Mark] is the CEO of the company.
proof_state: [{('Richard', 'father', 'Mark'): [('Richard', 'brother', 'Michael'), ('Michael', 'father', 'Mark')]}, {('Michael', 'father', 'Mark'): [('Michael', 'brother', 'David'), ('David', 'father', 'Mark')]}]