question: How many books are in Dan Simmons' Hyperion series?
answerText: 4
questionEntity.name: Q1213577
questionEntity.entityType: entity
questionEntity.label: Hyperion Cantos
questionEntity.mention: Hyperion
questionEntity.name: Q297538
questionEntity.entityType: entity
questionEntity.label: Dan Simmons
questionEntity.mention: Dan Simmons'
answerEntity.name: Q1798059
answerEntity.label: Hyperion
answerEntity.name: Q2362526
answerEntity.label: The Fall of Hyperion
answerEntity.name: Q2656138
answerEntity.label: Endymion
answerEntity.name: Q2521688
answerEntity.label: The Rise of Endymion