Complex sentence: The Presidential Townhouse is a building at 716 Jackson Place NW in Washington, D.C., owned by the U.S. Government and is reserved for the exclusive use by former Presidents when they are in town.
Split into simpler sentences: The Presidential Townhouse is a building located at 716 Jackson Place NW in Washington, D.C., owned by the United States government. It is reserved for the exclusive use by former U.S. Presidents when they are in town.