Jelaskan Somisspo dari Kawasan kejiranan di San Francisco dalam bahasa melayu

Somisspo is small industrial area at the intersection of three other neighborhoods, from which it draws its name, South of Market, the Mission District and Potrero Hill. It is distinctly different from any one of these neighborhoods, while also sharing certain aspects of each. Somisspo is characterized by the jumble of elevated freeway interchange ramps from U.S. Route 101 and Interstate 80, and the streets that run beneath. In many places, historic tracks are still visible from when the area was a distribution hub for the Southern Pacific Railroad.