Baltimore and Potomac Railroad Station
The Baltimore and Potomac Railroad Station , also known as Pennsylvania Railroad Station , was a railroad station that was owned by the Pennsylvania Railroad and operated by the Baltimore and Potomac Railroad in Washington , D . C . , from July 2 , 1872 until its closure in 1907 . 
<triplet> Baltimore and Potomac Railroad Station <subj> Pennsylvania Railroad <obj> owned by <subj> Baltimore and Potomac Railroad <obj> operator <subj> Washington, D.C. <obj> located in the administrative territorial entity <triplet> Baltimore and Potomac Railroad <subj> Baltimore and Potomac Railroad Station <obj> owner of