18th Street has a local subway station at the crossing with Seventh Avenue, served by the 1 2 trains on the IRT Broadway – Seventh Avenue Line. There used to be an 18th Street station on the IRT Lexington Avenue Line at the crossing with Park Avenue South.
Which train line used to have an 18th Street Station at the crossing with Park Avenue South?
{'text': 'IRT Lexington Avenue Line', 'answer_start': 191}