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: Professor Maggie Walsh:  This is your objective . Sub - T : _ 67119 _ . Demon class : Polgara species . Though visual confirmation has not yet been made , we 're confident of the target 's approximate position , as it leaves behind a distinct protein marker . Dr. Angleman will brief you on its defenses .
Dr. Angelman: When threatened , bone skewers jut from the creature 's forearms during battle . It 's imperative when ensnaring it not to damage its arms . That 's all you really need to know .
Buffy Summers: Question .
Professor Maggie Walsh: Buffy ?
Buffy Summers: Why exactly ca n't we damage this polka thing 's arms ? I , uh , not that I want to , it 's just in my experience when fighting for your life , body parts get damaged and - better its bits than mine . Or ours .
Dr. Angelman: We wish to study the physiology of every subterrestrial 's natural defenses . It 's part of the research we do here . Uh - Yes ?
Buffy Summers: What do they want ?
Dr. Angelman: Want ?
Buffy Summers: Why are they here ? Sacrifices , treasure , or they just get rampagy ? I find it 's easier to predict their responses if I know ...
Dr. Angelman: They 're not sentient . Just destructive , I believe .
Professor Maggie Walsh: They do have keen eyesight , however . You might want to be suited up for this .
Buffy Summers: Oh . You mean the camo and stuff ? I thought about it but , I mean , it 's gon na look all ' Private Benjamin . '
Buffy Summers: Do
Buffy Summers: n't worry , I 've patrolled in this halter many times .
Professor Maggie Walsh: Why
Professor Maggie Walsh: do n't we give our attention to Dr. Angleman and save all questions until the end .
Dr. Angelman: Actually , I 'm finished .
Professor Maggie Walsh: Oh . Uh , well , Agent Finn , deploy the teams .
Riley Finn: Okay , listen up . We 'll be going in a four squad set - up . Team Leaders : Gates , Taggart , and Stavros . Alpha Team , you 're with me .
Professor Maggie Walsh: Report for TLs for assignment and weapons requisitions . Reminder : this is a zap - n - trap , people . Capture , not a kill . Any questions ? Buffy ?

Sub