Sentence:  Bobby Waters of Sylvania , Ga. , relief quarterback for the <WSD>San</WSD> Francisco 49ers of the National Football League , will undergo a knee operation tomorrow at Franklin Hospital here . 
Meaning of the word marked with <WSD> tags:  a port in western California near the Golden Gate that is one of the major industrial and transportation centers; it has one of the world's finest harbors; site of the Golden Gate Bridge