story: [Dan] was having a cookout one day, and invited his sister [Aida]. [Aida]'s brother [Vincent] drove them to the cookout.
query: ('Vincent', 'Dan')
clean_story: [Dan] was having a cookout one day, and invited his sister [Aida]. [Aida]'s brother [Vincent] drove them to the cookout.
proof_state: [{('Vincent', 'brother', 'Dan'): [('Vincent', 'sister', 'Aida'), ('Aida', 'brother', 'Dan')]}]