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: Skye:  I know that face , something gives me a feeling I should be sitting down for this .
Phil Coulson: I 've been looking for a way to tell you this , looking around for some answers , something to help ... explain ... but I do n't have any . So ... the drug , the _ one _ who saved us both - when we found it , I discovered something else . Its source . It was ... alien .
Skye: A - Alien , as in ... unfamiliar ?
Phil Coulson: No .
Skye: Wow .
Phil Coulson: The minute I learned what it was , I tried to keep them from injecting you with it , but I was too late . I 'm so sorry , Skye .
Skye: You were trying to save my life . You * did * save my life .
Phil Coulson: I was desperate to , and I subjected you to unknown ramifications or side effects .
Skye: I 'm sorry to say this , sir , but ... so what ? We are alive . And you 've had that in you , uh , for some time now , and you 're okay , right ? Plus , you 're not sprouting a pointy tail or anything , so bonus there .
Phil Coulson: I know nothing fazes you , but this should faze you . We are completely in the dark on this .
Skye: That 's where we live . I 'm an 0 - 8 - 4 . Who knows what the hell that means ? At least we 're in the dark together .
Phil Coulson: Yes . But not for long . To hell with any protocols or any code I used to bound by . We have a long list of questions we need answers for , and we 're going after them ourselves .
Skye: Well , if the team 's up for it ...
Phil Coulson: No . No , listen to me . I trust them , but we need to protect them from this . Fury went to dangerous lengths to keep this under wraps - lied to me , lied to S.H.I.E.L.D. This is a powerful secret , a secret men died for . Until we know why , we ca n't share this with anyone , for their safety and ours .
Skye: Got it . So what 'll it be , A.C. ? What do we go after first ?
Phil Coulson: The person responsible for this . And we make him pay .

drug