question: How many senators became president?
answerText: 17
questionEntity.name: Q11696
questionEntity.entityType: entity
questionEntity.label: President of the United States
questionEntity.mention: president
questionEntity.name: Q4416090
questionEntity.entityType: entity
questionEntity.label: United States senator
questionEntity.mention: senators
answerEntity.name: Q6279
answerEntity.label: Joe Biden
answerEntity.name: Q76
answerEntity.label: Barack Obama
answerEntity.name: Q9588
answerEntity.label: Richard Nixon
answerEntity.name: Q9640
answerEntity.label: Lyndon B. Johnson
answerEntity.name: Q9696
answerEntity.label: John F. Kennedy