I want to know the answer to the following question:
The AirTrain has a station at what airport?
All the background I'm provided with is that "For intercity rail, New York City is served by Amtrak, whose busiest station by a significant margin is Pennsylvania Station on the West Side of Manhattan, from which Amtrak provides connections to Boston, Philadelphia, and Washington, D.C. along the Northeast Corridor, as well as long-distance train service to other North American cities.". Is that enough to answer the question?