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: Henry Blake:  Captain Sloan here is with supply .
Captain Sloan: More accurately , I 'm with the 375th Q. M. H. Q. , COMSEAPAC , SEOULSEC REPDEP .
Hawkeye: Maybe I 'll have that drink .
Captain Sloan: Now , the business at hand is an incubator , that is if my lieutenant understood what your colonel said you captains want .
Hawkeye: Right .
Trapper: And we need _ one _ as soon as possible .
Captain Sloan: Well , let 's see what the good book says .
Hawkeye: The good book ?
Captain Sloan: The Manual of Supply and Requisition .
Hawkeye: MANSUPREQ .
Captain Sloan: Um , " inhalator , indicator , innoculator , infusilator - " Here it is : 437 - stroke - R2 , incubator .
Henry Blake: Thar she blows !
Captain Sloan: " Device for developing bacterial cultures at constant suitable temperatures . " Uh - huh . I see . That certainly makes sense . You ca n't have one .

incubator