Sentence:  Eight or ten <WSD>years</WSD> ago , a couple of French hoods stole a priceless Khmer head from the Musee Guimet , in Paris , and a week later crawled into the Salpetriere with unmistakable symptoms of leprosy . 
Meaning of the word marked with <WSD> tags:  a period of time containing 365 (or 366) days