Question: What Hospital serves as a teaching hospital for Georgetown University School of Medicine,  MedStar Washington Hospital Center or Walter Reed Army Medical Center?
Sentence (from "Walter Reed Army Medical Center"): The Walter Reed Army Medical Center (WRAMC) — known as Walter Reed General Hospital (WRGH) until 1951 — was the U.S. Army's flagship medical center from 1909 to 2011.
Relevant evidence: Yes