story: [Lisa] was trying to calm down her daughter [Eustolia]. [Eustolia] was upset because her brother [Erik] kept making fun of her. [Lisa]'s mom, [Sandra], has recently taken art classes. [Michelle] is a woman with a sister named [Eustolia].
query: ('Erik', 'Sandra')
clean_story: [Lisa] was trying to calm down her daughter [Eustolia]. [Eustolia] was upset because her brother [Erik] kept making fun of her. [Lisa]'s mom, [Sandra], has recently taken art classes.
proof_state: [{('Erik', 'grandmother', 'Sandra'): [('Erik', 'mother', 'Lisa'), ('Lisa', 'mother', 'Sandra')]}, {('Erik', 'mother', 'Lisa'): [('Erik', 'sister', 'Eustolia'), ('Eustolia', 'mother', 'Lisa')]}]