story: [Reta] was talking about food with her sister [Lisa]. [Kirk] and her brother [Jeremy] were playing in the park. [Jeremy] saw his sister [Reta] getting ice cream and wanted some too.
query: ('Kirk', 'Lisa')
clean_story: [Kirk] and her brother [Jeremy] were playing in the park. [Jeremy] saw his sister [Reta] getting ice cream and wanted some too. [Reta] was talking about food with her sister [Lisa].
proof_state: [{('Kirk', 'sister', 'Lisa'): [('Kirk', 'sister', 'Reta'), ('Reta', 'sister', 'Lisa')]}, {('Kirk', 'sister', 'Reta'): [('Kirk', 'brother', 'Jeremy'), ('Jeremy', 'sister', 'Reta')]}]