Broad Street Line
The Broad Street Line ( BSL ) —also known as the Broad Street subway ( BSS ) , Orange Line , or Broad Line—is a subway line owned by the city of Philadelphia and operated by the Southeastern Pennsylvania Transportation Authority ( SEPTA ) . 
<triplet> Broad Street Line <subj> Philadelphia <obj> owned by <subj> Southeastern Pennsylvania Transportation Authority <obj> operator <triplet> Southeastern Pennsylvania Transportation Authority <subj> Philadelphia <obj> located in the administrative territorial entity