question: What is the chief river of the second-largest drainage system on the North American continent that does not border Pennsylvania?
answerText: the mississippi river
questionEntity.name: Q1400
questionEntity.entityType: entity
questionEntity.label: Pennsylvania
questionEntity.mention: Pennsylvania
questionEntity.name: Q49
questionEntity.entityType: entity
questionEntity.label: North America
questionEntity.mention: North American
questionEntity.name: 2
questionEntity.entityType: ordinal
questionEntity.mention: second
answerEntity.name: Q1497
answerEntity.label: Mississippi River