story: [Rose] talks to her son [Edward] every day. [Sandra]'s biggest accomplishment is raising her son [James]. [Rose] picked up her son [Errol] from tennis practice and then met up with her husband [James] for dinner.
query: ('Sandra', 'Errol')
clean_story: [Sandra]'s biggest accomplishment is raising her son [James]. [Rose] picked up her son [Errol] from tennis practice and then met up with her husband [James] for dinner.
proof_state: [{('Sandra', 'grandson', 'Errol'): [('Sandra', 'son', 'James'), ('James', 'son', 'Errol')]}, {('James', 'son', 'Errol'): [('James', 'wife', 'Rose'), ('Rose', 'son', 'Errol')]}]