Question: What was the averge weekly ridership in 2014 of the commute rail system that includes the Port Washington Branch rail line?
Sentence (from "Long Island Rail Road"): The Long Island Rail Road (reporting mark LI) , legally known as the Long Island Rail Road Company and often abbreviated as the LIRR, is a commuter rail system in the southeastern part of the U.S. state of New York, stretching from Manhattan to the eastern tip of Suffolk County on Long Island.
Relevant evidence: No