Sentence:  Kerr , who set the world record earlier this month in New York with a clocking of 1.09.3 , wiped out Mills 's early pace and beat the young Big 10 quarter-mile king by 5 <WSD>yards</WSD> . 
Meaning of the word marked with <WSD> tags:  a unit of length equal to 3 feet; defined as 91.44 centimeters; originally taken to be the average length of a stride