context: Capitol Hill, besides being a metaphor for the United States Congress, is the largest historic residential neighborhood in Washington, DC, extending eastward in front of the United States Capitol Building along wide roads, and is one of the oldest residential communities in Washington, It has a population of approximately 35,000 people living in less than 2 square miles, and is thus one of the most densely populated areas.
question: What is the largest historic residential neighborhood in Washington, DC?
answers.text: Capitol Hill