story: [Jason] was trying to decide whether he wanted to spend time with his grandmother [Sandra], or with his mother [Carol]. [Jason] often goes out for lunch with his sister, [Anna]. [Mark] prepared romantic dinner for Valentine's Day for his wife, [Carol].
query: ('Mark', 'Sandra')
clean_story: [Mark] prepared romantic dinner for Valentine's Day for his wife, [Carol]. [Jason] was trying to decide whether he wanted to spend time with his grandmother [Sandra], or with his mother [Carol].
proof_state: [{('Mark', 'mother-in-law', 'Sandra'): [('Mark', 'wife', 'Carol'), ('Carol', 'mother', 'Sandra')]}, {('Carol', 'mother', 'Sandra'): [('Carol', 'son', 'Jason'), ('Jason', 'grandmother', 'Sandra')]}]