story: [Nancy] was thrilled for her brother, [Otto], and his new job. [Nancy] could n't wait to tell her mother, [Maria]. [Maria] was playing in the sandbox with her brother [Jess].
query: ('Maria', 'Otto')
clean_story: [Nancy] was thrilled for her brother, [Otto], and his new job. [Nancy] could n't wait to tell her mother, [Maria].
proof_state: [{('Maria', 'uncle', 'Otto'): [('Maria', 'mother', 'Nancy'), ('Nancy', 'brother', 'Otto')]}]