story: [Georgina] always goes to the park with her son [Melvin] on Saturdays. [Mark] was disappointed that his father, [Jacob], would n't be at the play to see him perform. [Mark] was so proud of his son, [Melvin]. he received a great scholarship to college. [Melvin] bought gifts for his lovely sister, [Judith]
clean_story: [Georgina] always goes to the park with her son [Melvin] on Saturdays. [Mark] was so proud of his son, [Melvin]. he received a great scholarship to college. [Mark] was disappointed that his father, [Jacob], would n't be at the play to see him perform.
proof_state: [{('Georgina', 'father', 'Jacob'): [('Georgina', 'son', 'Melvin'), ('Melvin', 'grandfather', 'Jacob')]}, {('Melvin', 'grandfather', 'Jacob'): [('Melvin', 'father', 'Mark'), ('Mark', 'father', 'Jacob')]}]