story: [Gabrielle] has a grandson who is [Kevin]. [Dan] went to his brother [Kevin]'s Birthday party
query: ('Gabrielle', 'Dan')
clean_story: [Gabrielle] has a grandson who is [Kevin]. [Dan] went to his brother [Kevin]'s Birthday party
proof_state: [{('Gabrielle', 'grandson', 'Dan'): [('Gabrielle', 'grandson', 'Kevin'), ('Kevin', 'brother', 'Dan')]}]
edge_types: ['grandson', 'brother']