Sentence:  `` When they became members of the city police narcotics unit '' , Sokol said , `` they were told they would have to get to <WSD>know</WSD> certain areas of Chicago in which narcotics were sold and they would have to get to know people in the narcotics racket . 
Meaning of the word marked with <WSD> tags:  be familiar or acquainted with a person or an object