Sentence:  Willow Run , General Electric 's enormous installations at Louisville and Syracuse , the Pentagon , Boeing in Seattle , Douglas and Lockheed in <WSD>Los</WSD> Angeles , the new automobile assembly plants everywhere - none of these is substantially served by any sort of conventional mass rapid transit . 
Meaning of the word marked with <WSD> tags:  a city in southern California; motion picture capital of the world; most populous city of California and second largest in the United States