question: Which book in the Hitchhiker's Guide to the Galaxy series was released in 1980?
answerText: The Restaurant at the End of the Universe
questionEntity.name: Q3107329
questionEntity.entityType: entity
questionEntity.label: The Hitchhiker's Guide to the Galaxy
questionEntity.mention: Hitchhiker's Guide to the Galaxy
questionEntity.name: 1980
questionEntity.entityType: date
questionEntity.mention: 1980
answerEntity.name: Q578895
answerEntity.label: The Restaurant at the End of the Universe