Question: Which major American city is the site of both Sibley Memorial Hospital and the George Washington University Hospital?
Context: Sibley Memorial Hospital is a non-profit hospital located in The Palisades neighborhood of Washington D.C. It is fully accredited by the Joint Commission on Accreditation of Healthcare Organizations, and is licensed by the District of Columbia Department of Health and Human Services.  The hospital specializes in surgery, orthopedics, and oncology services.  It has been part of Johns Hopkins Medicine since 2010. The George Washington University Hospital is located in Washington, D.C. in the United States.  It is affiliated with the George Washington University School of Medicine and Health Sciences.  The current facility opened on August 23, 2002, with 371 beds in a 400,000 sq. ft. building, housing more than $45 million of medical equipment and costing over $96 million to construct.  The hospital is licensed by the District of Columbia Department of Consumer and Regulatory Affairs and accredited by the U.S. Joint Commission. Memorial Hospital is a hospital located in Chattanooga, Tennessee.  It was officially opened on January 2, 1952.  Memorial Hospital is a member of The American Hospital Association, The Tennessee Hospital Association, The Catholic Hospital Association, The Chattanooga Area Hospital Council, and The Chattanooga Area Safety Council.  Memorial Hospital has grown tremendously since 1952.  In 1952, Memorial Hospital had 200 beds.  Today, the hospital has 365 hospital beds.  It has nearly doubled in size over the 62 years since it opened.  Memorial is a general hospital that has a wide variety of specialties.  They have surgical, cardiac, interventional, cancer, orthopedic, and general care services.  Memorial is known as a leader in Cardiology.  Memorial is not a teaching hospital but they are a leader in new technology. Tomoaki Kato, M.D., is a noted pioneer in multiple-organ transplantation, pediatric and adult liver transplantation.  Kato is Surgical Director of Adult and Pediatric Liver and Intestinal Transplantation at NewYork-Presbyterian Hospital/Columbia University Medical Center and is a professor of surgery at Columbia University College of Physicians and Surgeons.  Kato is also known for unique and innovative surgeries for adults and children, including a six-organ transplant; a procedure called APOLT (auxiliary partial orthotopic liver transplantation) that resuscitates a failing liver by attaching a partial donor liver, making immunosuppressant drugs unnecessary; and the first successful human partial bladder transplantation involving the transplant of two kidneys together with ureters connected to a patch of the donor bladder.  In a highly publicized case, he led the first reported removal and re-implantation, or auto-transplantation, of six organs to excise a hard-to-reach abdominal tumor.  Previously the director of pediatric liver and gastrointestinal transplant and professor of clinical surgery at the University of Miami School of Medicine, Kato received his medical degree from the Osaka University Medical School in Japan and received his residency training in surgery at Osaka University Hospital and Itami City Hospital in Hyogo, Japan.  He completed a clinical fellowship in transplantation at the University of Miami/Jackson Memorial Hospital, in Miami, Florida, where he was subsequently appointed to the surgical faculty in 1997, and promoted to full professor in 2007.  He served as a surgeon and senior leader of the liver and transplantation center at Miami's Jackson Memorial Hospital, beginning in 1997, and at University of Miami Hospital (previously Cedars Medical Center), beginning in 2004.  Kato is a member of numerous professional and honorary organizations, and the author or co-author of more than 180 scientific papers in peer-reviewed journals. New York–Presbyterian Hospital Queens, stylized as NewYork–Presbyterian/Queens (NYP/Q or NYP/Queens), is a not-for-profit acute care and teaching hospital in the Flushing neighborhood of Queens in New York City.  Formerly operating as Booth Memorial Hospital and New York Hospital Queens (NYHQ), it is located on the northeast corner of Main Street and Booth Memorial Avenue.  The NewYork–Presbyterian Healthcare System had assumed control of the Booth Memorial Hospital until 2015, when the NewYork–Presbyterian Hospital, headquartered in Manhattan, assumed control and made the Booth Memorial Hospital a Queens campus. Ride On is the primary public transportation system in Montgomery County, Maryland.  Ride On serves Montgomery County as well as the community of Langley Park in Prince George's County.  Ride On also serves the Takoma Metro station, and Sibley Memorial Hospital in Washington, D.C. Lucy Webb Hayes National Training School was a religious training school, now a hospital, in Washington, D.C. So named in memory of Lucy Webb Hayes, the wife of former President Rutherford B. Hayes, it was founded in 1891.  It was the authorized training school of the Woman’s Home Missionary Society (now, Home Mission Society) of the Methodist Episcopal Church, which owned the property of the school, exercised supervision and jurisdiction over its management, and looked to it to supply the trained workers employed by the society in its widely diversified fields of labor.  The privileges of the school were not, however, confined to those connected with the Woman’s Home Missionary Society.  It opened its doors to all who wanted to prepare themselves for any department of Christian activity.  In 1894, the school was chartered by act of Congress in conjunction with the Deaconess Home and Sibley Memorial Hospital, and formed with them one corporation.  The unified administration and guaranteed the training of Christian workers. The West End is a neighborhood in the Northwest quadrant of Washington, D.C., bounded by K Street to the south, Rock Creek Park to the west and north, and New Hampshire Avenue and 21st Street to the east.  The West End is so named because it was the westernmost part of the original L'Enfant Plan for the city of Washington, before the annexation of Georgetown.  It is home to the embassies of Qatar and Spain as well as the Delegation of the European Union to the United States.  The George Washington University and George Washington University Hospital are on the edge of the West End, at Washington Circle. The George Washington University Medical Faculty Associates is a non-profit 501(c)3 physician group practice affiliated with the George Washington University.  The MFA group practice is made up of academic clinical faculty of the GW Medical School.  As of 2015, the group had more than 750 physicians providing medical services to the Washington DC, Northern Virginia, and Maryland areas.  The GW Medical Faculty Associates offers over 51 specialty areas of care.  The organization is a partner with the George Washington University Hospital and the School of Medicine and Health Sciences. Jerilyn Ross (December 20, 1946 in the Bronx, New York–January 7, 2010 at Sibley Memorial Hospital in Washington, D.C.) was an American psychotherapist, phobia expert, and mental health activist. " The New York Times"' Benedict Carey described her as "one of the country’s most visible and effective advocates for those with mental health problems."
Answer: Washington, D.C.