story: [Sandra] taught her son [Matthew] how to mow the lawn once he was old enough. [Teresa] asked [Sandra], her mother, to teach her how to mow the lawn too. [Molly] bought a present for her grandson [Matthew]
query: ('Teresa', 'Molly')
clean_story: [Sandra] taught her son [Matthew] how to mow the lawn once he was old enough. [Teresa] asked [Sandra], her mother, to teach her how to mow the lawn too. [Molly] bought a present for her grandson [Matthew]
proof_state: [{('Teresa', 'grandmother', 'Molly'): [('Teresa', 'brother', 'Matthew'), ('Matthew', 'grandmother', 'Molly')]}, {('Teresa', 'brother', 'Matthew'): [('Teresa', 'mother', 'Sandra'), ('Sandra', 'son', 'Matthew')]}]