Complex sentence: The President's House in Philadelphia at 524-30 Market Street was the third Presidential Mansion, housing George Washington from November 27,1790 to March 10,1797, and John Adams from March 21,1797 to May 30,1800.
Split into simpler sentences: The President's House, at 524-30 Market Street in Philadelphia, Pennsylvania, was the third Presidential Mansion. It housed George Washington from November 27,1790 to March 10,1797, and John Adams from March 21,1797 to May 30,1800.