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: Derek Morgan:  You 've been with this team , what , 2 years , right ?
Emily Prentiss: Almost three already .
Derek Morgan: It 's _ seven _ for me . I mean , that 's all I can think of all day . 'Cause the entire time I 've been with the BAU , working almost non - stop , having no real life , these brothers have been out there killing 89 people and we did n't even know about it .
Emily Prentiss: Well , we know now and we 'll make them pay .
Derek Morgan: But how many others are still out there , Prentiss ? Hmm , hunting and killing ? I mean , the thing is , no matter what we do , no matter how hard we work , no matter how good we are at what we do , this is never gon na end .

years