story: [Christopher] is helping his son study. His name is [William]. [William] sent his grandmother [Gabrielle] flowers on her birhday.
query: ('Christopher', 'Gabrielle')
clean_story: [Christopher] is helping his son study. His name is [William]. [William] sent his grandmother [Gabrielle] flowers on her birhday.
proof_state: [{('Christopher', 'mother', 'Gabrielle'): [('Christopher', 'son', 'William'), ('William', 'grandmother', 'Gabrielle')]}]