Definition: In this task, you will use your knowledge about language (and common sense) to determine what element the marked number refers to. The numbers are marked with two underlines around them, like: _ number _. Your answer should be chosen from the given text, and should not contain other words.
Input: Sgt. Joe Friday:  This is the city . From one night to the next it 's never the same . They make it that way . Counting the suburbs , there 's _ four _ million of 'em . Most of the people have something to add . A few of 'em are out to take it away . In my job , they 're the ones that keep you on the move . I 'm a cop .

people