Question: Lithia Springs Creek, is a tributary of which major river located in the northeastern United States, at 464 mi long, it is the longest river on the East Coast?
Sentence (from "Lithia Springs Creek"): Lithia Springs Creek (also known as Johnsons Run or Lithia Spring Creek) is a tributary of the Susquehanna River in Northumberland County, Pennsylvania, in the United States.
Relevant evidence: Yes