I want to know the answer to the following question:
George Washington once paid visit to Sherman's house, what year was this?
All the background I'm provided with is that "Grove Street Cemetery, a National Historic Landmark which lies adjacent to Yale's campus, contains the graves of Roger Sherman, Eli Whitney, Noah Webster, Josiah Willard Gibbs, Charles Goodyear and Walter Camp, among other notable burials.". Is that enough to answer the question?