"Chinese violin" or "Chinese two-string fiddle" is sound you get accustomed when you spend your days in Chinatown.
Everybody knows that San Francisco is build on a very steep hills and streets. I think that looking at a house from this perspective explains it much better than any mathematical equation can.
If you have a seet tooth and are looking for a delicious bakery, the Eastern Bakery is located on 720 Grant Avenue in San Francisco.