story: [James] and his daughter [Amanda] went to Disney World together. [James] and his son, [David], helped his father [Adam] with house chores.
query: ('Adam', 'David')
clean_story: [James] and his son, [David], helped his father [Adam] with house chores.
proof_state: [{('Adam', 'grandson', 'David'): [('Adam', 'son', 'James'), ('James', 'son', 'David')]}]