story: [Lisbeth] is married to Thomas and when she was 24, the couple welcomed [Ellen] into the world. [Rose] and her sister, [Lisbeth], made a cake for [Rose]'s son [Errol]. [Errol]'s grandmother, [Sandra], ended up eating the entire cake.
query: ('Lisbeth', 'Sandra')
clean_story: [Rose] and her sister, [Lisbeth], made a cake for [Rose]'s son [Errol]. [Errol]'s grandmother, [Sandra], ended up eating the entire cake.
proof_state: [{('Lisbeth', 'mother', 'Sandra'): [('Lisbeth', 'sister', 'Rose'), ('Rose', 'mother', 'Sandra')]}, {('Rose', 'mother', 'Sandra'): [('Rose', 'son', 'Errol'), ('Errol', 'grandmother', 'Sandra')]}]