question: Which book in the Harry Potter series introduces the character Luna Lovegood?
answerText: The Order of the Phoenix
questionEntity.name: Q8337
questionEntity.entityType: entity
questionEntity.label: Harry Potter
questionEntity.mention: Harry Potter
questionEntity.name: Q190282
questionEntity.entityType: entity
questionEntity.label: Luna Lovegood
questionEntity.mention: Luna Lovegood
answerEntity.name: Q80817
answerEntity.label: Harry Potter and the Order of the Phoenix