story: [Preston] went to the grocery store for his brother [Paul], because he broke his leg. [Melissa]'s brother [James] and her went to get ice cream. [James] took his brother [Paul] to Las Vegas to go gambling.
query: ('James', 'Preston')
clean_story: [James] took his brother [Paul] to Las Vegas to go gambling. [Preston] went to the grocery store for his brother [Paul], because he broke his leg.
proof_state: [{('James', 'brother', 'Preston'): [('James', 'brother', 'Paul'), ('Paul', 'brother', 'Preston')]}]