story: [Teresa] was playing in the sandbox with her brother [Matthew]. [Anthony] bought his wife, [Teresa], a new necklace. [Sandra] had to pick her son [Matthew] up from school because the schools' bus was broke down.
query: ('Anthony', 'Sandra')
clean_story: [Anthony] bought his wife, [Teresa], a new necklace. [Teresa] was playing in the sandbox with her brother [Matthew]. [Sandra] had to pick her son [Matthew] up from school because the schools' bus was broke down.
proof_state: [{('Anthony', 'mother-in-law', 'Sandra'): [('Anthony', 'wife', 'Teresa'), ('Teresa', 'mother', 'Sandra')]}, {('Teresa', 'mother', 'Sandra'): [('Teresa', 'brother', 'Matthew'), ('Matthew', 'mother', 'Sandra')]}]