Question: What hospital near the Congress Heights neighborhood opened in 1855?
Sentence (from "Congress Heights"): The irregularly shaped neighborhood is bounded by the St. Elizabeths Hospital campus, Lebaum Street SE, 4th Street SE, and Newcomb Street SE on the northeast; Shepard Parkway and South Capitol Street on the west; Atlantic Street SE and 1st Street SE (as far as Chesapeake Street SE) on the south; Oxon Run Parkway on the southeast; and Wheeler Street SE and Alabama Avenue SE on the east.
Relevant evidence: No