story: [Michelle] loves to make candy for her granddaughter. Her name is [Stacy]. [Michelle] took her granddaughter [Karen] out to play near the lake. [Karen] was playing in the sandbox with her brother [Brian].
query: ('Michelle', 'Brian')
clean_story: [Michelle] took her granddaughter [Karen] out to play near the lake. [Karen] was playing in the sandbox with her brother [Brian].
proof_state: [{('Michelle', 'grandson', 'Brian'): [('Michelle', 'granddaughter', 'Karen'), ('Karen', 'brother', 'Brian')]}]