story: [Deborah] invited her mother, [Lisa], to dinner and extended the invitation to [Lisa]'s son, [Joe].
query: ('Deborah', 'Joe')
clean_story: [Deborah] invited her mother, [Lisa], to dinner and extended the invitation to [Lisa]'s son, [Joe].
proof_state: [{('Deborah', 'brother', 'Joe'): [('Deborah', 'mother', 'Lisa'), ('Lisa', 'son', 'Joe')]}]