question: Who was the husband to Catherine the Great and the son of Charles Frederick?
answerText: Peter III of Russia
questionEntity.name: Q5077830
questionEntity.entityType: entity
questionEntity.label: Charles Frederick
questionEntity.mention: Charles Frederick
questionEntity.name: Q36450
questionEntity.entityType: entity
questionEntity.label: Catherine II of Russia
questionEntity.mention: Catherine the Great
answerEntity.name: Q151789
answerEntity.label: Peter III of Russia