story: [June] and [Nicolas] are siblings who are enjoying lunch together. [Clarence] bought a train set for his grandson [Nicolas].
query: ('Clarence', 'June')
clean_story: [Clarence] bought a train set for his grandson [Nicolas]. [June] and [Nicolas] are siblings who are enjoying lunch together.
proof_state: [{('Clarence', 'granddaughter', 'June'): [('Clarence', 'grandson', 'Nicolas'), ('Nicolas', 'sister', 'June')]}]
edge_types: ['grandson', 'sister']