Sentence:  Once they′d entered the floors of parking spaces, James found a <WSD>park</WSD> relatively easily, but Mark had difficulty, and only a swift sprint allowed him to catch up as James walked through the throngs of people in the casino with the determination of a man who didn′t want to be delayed. 
Meaning of the word marked with <WSD> tags:  A space in which to leave a car; a parking space.