Question: Which hospital has the most beds, George Washington University Hospital or Psychiatric Institute of Washington?
Context: The New York State Psychiatric Institute, located in the Columbia University Medical Center in the Washington Heights neighborhood of Manhattan, New York City, was established in 1895 as one of the first institutions in the United States to integrate teaching, research and therapeutic approaches to the care of patients with mental illnesses.  In 1925, the Institute affiliated with Presbyterian Hospital, now New York-Presbyterian Hospital, adding general hospital facilities to the Institute's psychiatric services and research laboratories. 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. The Martin University Hospital (Slovak: "Univerzitná nemocnica Martin" , abbreviated to UNM) is a Slovak public university hospital located in the Martin municipality, in the county of Zilina, north-east of the Slovak capital Bratislava.  It is a teaching hospital and it is the main university hospital affiliated with the Jessenius School of Medicine.  The hospital has over 1,700 employees.  Martin University Hospital has 900 beds in total including all sectors. Kamuzu Central Hospital is a teritary referral hospital in the Lilongwe, Malawi.  It is estimated to have 600-1,000 beds, though the true number of patients always exceeds the number of beds.  It serves approximately 5 million people.  It has a partnership with the University of North Carolina in the United States and a partnership project, called MAGNET (Malawi German Networking for Capacity Building in Treatment, Training and Research at Kamuzu Central Hospital), with the Institute of Public Health of the University Hospital Heidelberg in Germany, the University Hospital Cologne and the University Hospital Bonn. 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. The C.S. Mott Children's Hospital is a pediatric hospital through the University of Michigan Health System in Ann Arbor, Michigan.  The hospital, financed with a large donation from C.S. Mott, replaced the University Hospital's pediatric wards in 1969.  Although commonly understood to be a physical health complex, C.S. Mott Children's Hospital also includes a youth and adolescent psychiatric ward separate from the rest of the children's hospital.  In 2006, the university broke ground to build a new $754 million facility that opened as of November 2011.  The building contains 348 single, private room beds divided between the children's and women's hospital including a dedicated pediatric emergency department.  The children's hospital is consistently ranked as one of the top pediatric centers in the country according to U.S. News & World Report. This is a list of hospitals in North Carolina.  There are 126 hospitals in 83 counties.  Seventeen counties currently do not have a hospital.  Duke University Hospital is currently the largest hospital, with 943 hospital beds.  Vidant Bertie Hospital is currently the smallest, with six hospital beds.  Charlotte has the highest concentration of hospitals, with seven.  Four hospitals serve as university-affiliated academic medical centers: Duke University Hospital, Vidant Medical Center, UNC Health Care and Wake Forest Baptist Medical Center, while Carolinas Medical Center is unaffiliated. The Psychiatric Institute of Washington (PIW) is an acute (104 bed) psychiatric hospital in Washington, D.C. Opened in 1967, PIW is a short-term, private hospital.  It offers behavioral healthcare to patients suffering from mental and addictive illnesses, including children, adolescents, adults and the elderly.  Services offered by PIW include inpatient, partial and intensive outpatient hospitalization, and group treatment programs for substance abuse and addiction. Legacy Holladay Park Medical Center is a hospital located in Portland, Oregon, United States.  It was founded in 1893 as Hahnemann Hospital.  By 1947 the hospital had 100 beds, and that year it changed its name to Holladay Park Hospital with plans to expand to 200 beds.  With a 1985 merger with Physicians & Surgeons Hospital (which had been known as Coffey Memorial Hospital until 1945), the name was changed to Holladay Park Medical Center.  At that time both hospitals were part of Metropolitan Hospitals, Inc. that had been formed by Physicians & Surgeons Hospital and Emanuel Hospital.  After becoming part of Legacy Health when it was formed in 1989, Legacy closed the then 171-bed hospital in 1994.  As of 2014, the former hospital was used by Legacy as the Legacy Research Institute.  Legacy proposed converting the building into an emergency room for psychiatric patients in 2014 after the Legacy Research Institute moved to a new building.  Legacy, Oregon Health & Science University, Adventist Health, and Kaiser Permanente agreed to operate the ER, with a planned opening in 2016.
Answer: George Washington University Hospital