Complex sentence: Broad Street Station was a railroad station built in 1881 and served as Philadelphia, Pennsylvania's primary rail hub until the Pennsylvania Railroad (PRR) completed 30th Street Station in 1933.
Split into simpler sentences: Broad Street Station was a railroad station built in 1881 in Philadelphia, Pennsylvania. It served as the city's primary rail hub until the Pennsylvania Railroad (PRR) completed 30th Street Station in 1933.