story: [Elliott]'s son, [Mark], and his mother, [Molly], spent a nice day at the river looking for pretty rocks. [Marian] has been waiting around all day for her son, [Mark].
query: ('Marian', 'Molly')
clean_story: [Marian] has been waiting around all day for her son, [Mark]. [Elliott]'s son, [Mark], and his mother, [Molly], spent a nice day at the river looking for pretty rocks.
proof_state: [{('Marian', 'mother', 'Molly'): [('Marian', 'son', 'Mark'), ('Mark', 'grandmother', 'Molly')]}, {('Mark', 'grandmother', 'Molly'): [('Mark', 'father', 'Elliott'), ('Elliott', 'mother', 'Molly')]}]