story: [Gabrielle] made tacos with her grandson [Dan]. [Dan]'s brother [Kevin] watched the process.
query: ('Gabrielle', 'Kevin')
clean_story: [Gabrielle] made tacos with her grandson [Dan]. [Dan]'s brother [Kevin] watched the process.
proof_state: [{('Gabrielle', 'grandson', 'Kevin'): [('Gabrielle', 'grandson', 'Dan'), ('Dan', 'brother', 'Kevin')]}]
edge_types: ['grandson', 'brother']