Question: Both MedStar Georgetown University Hospital and Children's National Medical Center are located in which U.S. city?

Context paragraphs:
Georgetown University Medical Center: Georgetown University Medical Center (GUMC) is the medical campus at Georgetown University.  It is also a $225 million biomedical research and educational organization.  The Medical Center contains over 80% of Georgetown University's sponsored research funding and is led by Edward B. Healton, MD, the Executive Vice President for Health Sciences and Executive Dean of the School of Medicine

Lenny B. Robinson: Lenny's mission was "to entertain ill and terminally ill children by appearing to them as Batman and teaching them that just as Batman fights battles, no matter how hard or long their health battles may be, with strength of will and determination, there is always hope!"  Lenny visited sick children in hospitals, handing out Batman paraphernalia to them, and was sure to sign every book, hat, T-shirt, and backpack he handed out ""Batman"".  Some of the hospitals he visited included the Children's National Medical Center, Sinai Hospital, and Georgetown University Hospital.  In 2016, Laurie Strongin and her non-profit, Hope For Henry Foundation, started the LENNY "BATMAN" ROBINSON HOPE FOR HENRY PROGRAM at Sinai Hospital in Baltimore.

MedStar Georgetown University Hospital: MedStar Georgetown University Hospital is one of the national capital area's oldest academic teaching hospitals.  It is a not-for-profit, acute care teaching and research facility located in the Georgetown neighborhood of the Northwest Quadrant of Washington, D.C.  MedStar Georgetown is co-located with the Georgetown University Medical Center and is affiliated with the Georgetown University School of Medicine.  Its clinical services represent one of the largest, most geographically diverse, and fully integrated healthcare and delivery networks in the area.  MedStar Georgetown is home to the internationally known Lombardi Comprehensive Cancer Center, as well as centers of excellence in the neurology, neurosurgery, psychiatry, gastroenterology, transplant and vascular surgery.  Originally named Georgetown University Hospital, it became part of the MedStar Health network in 2000.

List of hospitals in North Carolina: 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.

Georgetown University School of Medicine: Georgetown University School of Medicine, a medical school opened in 1851, is one of Georgetown University's five graduate schools.  It is located on Reservoir Road in the Georgetown neighborhood of Washington, DC, adjacent to the University's main campus.  The School of Medicine works in association with the 609-bed Georgetown University Hospital, Washington Hospital Center, and nine other affiliated federal and community hospitals in the Washington metropolitan area.  Georgetown is the oldest Catholic medical school in the United States.

Banner University Medical Center Tucson: Banner - University Medical Center Tucson (BUMCT), formerly University Medical Center and the University of Arizona Medical Center, is a private, non-profit, 487-bed acute-care hospital located on the campus of the University of Arizona in Tucson, Arizona.  BUMCT is part of the University of Arizona Health Sciences (UAHS) center campus which includes the university's Colleges of Medicine, Nursing, Pharmacy and Public Health.  It is Southern Arizona's only Level I trauma center for both adult and pediatric patients.  BUMCT is one of two University of Arizona affiliated academic medical centers in Tucson with Banner - University Medical Center South (formerly Kino Community Hospital, University Physicians Healthcare Hospital, and University of Arizona Medical Center - South Campus) being the other such institution.  The area's only dedicated Children's hospital, Banner Children's at Diamond Children's Medical Center, is located within and adjacent to BUMCT.

Medical/Market Center station: Medical/Market Center station is a Trinity Railway Express commuter rail station in Dallas, Texas.  It is located at Motor Street and Medical Center Drive along the Stemmons Corridor (Interstate 35E) in North Dallas.  It opened on December 30, 1996 and serves Dallas Market Center and the nearby medical district which includes Parkland Memorial Hospital, Children's Medical Center of Dallas, University of Texas Southwestern Medical Center, St. Paul Medical Center and Zale Lipshy University Hospital.

Stony Brook University Hospital: Stony Brook University Hospital, previously known as Stony Brook University Medical Center, is the university hospital of Stony Brook University located in the East Campus in Stony Brook, New York.  It is the largest academic medical center on Long Island with 603 beds for patient care.  The hospital houses the Stony Brook University School of Medicine.  Long Island's only tertiary care and Level 1 Trauma Center, the hospital is ranked as the 20th best in New York and 21st in the New York metropolitan area by U.S. News and World Report

Children's National Medical Center: Children’s National Medical Center (formerly DC Children’s Hospital) is ranked among the top 10 children’s hospitals in the country by "U.S. News & World Report."  Located just north of the McMillan Reservoir and Howard University, it shares grounds with Washington Hospital Center, National Rehabilitation Hospital, and the DC Veterans Affairs Medical Center.  Kurt Newman, M.D., has served as the president and chief executive officer of Children’s National since 2011.  Children's National is a not-for-profit institution that performs more than 450,000 visits each year.  Featuring 303 beds and a Level IV NICU, Children's National is the regional referral center for pediatric emergency, trauma, cancer, cardiac and critical care as well as neonatology, orthopaedic surgery, neurology and neurosurgery.

Loyola University Medical Center: The Loyola University Medical Center is a quaternary-care system with a 61 acre main medical center campus in the western suburbs of Chicago, in the U.S. state of Illinois.  The medical center campus is located in Maywood, 13 mi west of the Chicago Loop and 8 mi east of Oak Brook.  The heart of the medical center campus is Loyola University Hospital.  Also on campus are the Joseph Cardinal Bernardin Cancer Center (now named for the late Cardinal Joseph Louis Bernardin, Archbishop of Chicago, who was a patient at the Cancer Center when he died in November 1996 from metastatic pancreatic cancer) Loyola Outpatient Center, Center for Heart & Vascular Medicine and Loyola Oral Health Center as well as the Stritch School of Medicine (named for Samuel Cardinal Stritch, a former Archbishop of Chicago) Loyola University Chicago Marcella Niehoff School of Nursing and the Loyola Center for Fitness.  Loyola's Gottlieb campus in Melrose Park, Illinois includes the 264-licensed-bed community hospital, the Gottlieb Health and Fitness Center and the Marjorie G. Weinberg Cancer Care Center.  Loyola University Health System has been a member of Trinity Health since July 2011.  The Neiswanger Institute for Bioethics and Health Policy is a part of the Stritch School of Medicine.

Supporting paragraphs: MedStar Georgetown University Hospital Children's National Medical Center
Answer: Washington, D.C.