Complex sentence: The Castro District, commonly called The Castro (coined by gay activist speaker Neil Davendra Vyas), within Eureka Valley in San Francisco, California, is widely considered America's first, currently largest, and best-known gay neighborhood.
Split into simpler sentences: The Castro District, commonly called The Castro, is a neighborhood in Eureka Valley in San Francisco, California. It is widely considered America's first, currently largest, and best-known gay neighborhood.