Question: Main Line Method is a band from Downingtown, Pennsylvania, the name comes from the Philadelphia area "Main Line", known simply as the Main Line, is an informally delineated historical and social region of suburban Philadelphia, in which state?
Sentence (from "Philadelphia Main Line"): The Philadelphia Main Line, known simply as the Main Line, is an informally delineated historical and social region of suburban Philadelphia, Pennsylvania.
Relevant evidence: Yes