Sentence:  Rep. Henry C. Grover , who teaches history in the <WSD>Houston</WSD> public schools , would reduce from 24 to 12 semester hours the so-called `` teaching methods '' courses required to obtain a junior or senior high school teaching certificate . 
Meaning of the word marked with <WSD> tags:  the largest city in Texas; located in southeastern Texas near the Gulf of Mexico; site of the National Aeronautics and Space Administration