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: Arvin Sloane:  Because I did n't have the orchid , I attempted to artificially manufacture its nectar
Sydney Bristow: Because your imposter already has the orchid , he does n't need to acquire any of the other substances you mentioned . All he has to do is put the nectar into the water , you contaminated .
Nadia Santos: You loaded the gun .
Arvin Sloane: That 's right .
Sydney Bristow: How many people are we talking about ? How many people drank the contaminated water ?
Arvin Sloane: Somewhere between _ three _ and four hundred million .
Sydney Bristow: What ?

people