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

<P0-S0> 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. <P0-S1>  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. <P0-S2>  It is Southern Arizona's only Level I trauma center for both adult and pediatric patients. <P0-S3>  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. <P0-S4>  The area's only dedicated Children's hospital, Banner Children's at Diamond Children's Medical Center, is located within and adjacent to BUMCT. <SEP> <P1-S0> 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." <P1-S1>  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. <P1-S2>  Kurt Newman, M.D., has served as the president and chief executive officer of Children’s National since 2011. <P1-S3>  Children's National is a not-for-profit institution that performs more than 450,000 visits each year. <P1-S4>  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. <SEP> <P2-S0> Medical/Market Center station is a Trinity Railway Express commuter rail station in Dallas, Texas. <P2-S1>  It is located at Motor Street and Medical Center Drive along the Stemmons Corridor (Interstate 35E) in North Dallas. <P2-S2>  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. <SEP> <P3-S0> MedStar Georgetown University Hospital is one of the national capital area's oldest academic teaching hospitals. <P3-S1>  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. <P3-S2>  MedStar Georgetown is co-located with the Georgetown University Medical Center and is affiliated with the Georgetown University School of Medicine. <P3-S3>  Its clinical services represent one of the largest, most geographically diverse, and fully integrated healthcare and delivery networks in the area. <P3-S4>  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. <P3-S5>  Originally named Georgetown University Hospital, it became part of the MedStar Health network in 2000.