Question: an Amtrak "Northeast Regional" train wrecked on what electrified railway line in the Northeast  
Sentence (from "2015 Philadelphia train derailment"): On May 12, 2015, an Amtrak "Northeast Regional" train from Washington, D.C. bound for New York City derailed and wrecked on the Northeast Corridor in the Port Richmond neighborhood of Philadelphia, Pennsylvania.
Relevant evidence: Yes