Question: What is a borough in Lehigh County, Pennsylvania  located 20 miles north of a city in Lehigh and Northampton counties in the Lehigh Valley region of the eastern portion of the U.S. state of Pennsylvania?
Sentence (from "Bethlehem, Pennsylvania"): As of the 2010 census, the city had a total population of 74,982, making it the seventh largest city in Pennsylvania, after Philadelphia, Pittsburgh, Allentown, Erie, Reading, and Scranton.
Relevant evidence: No