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: Jimmy:  The Feds would like you to stay on the case since you 've been so involved this far , and the FBI will give you all the backup and resources you need to continue your investigation .
Det. Arlen: That 's just great . What kind of resources .
Jimmy: Unlimited .
Det. Arlen: Unlimited , huh ?
Jimmy: Uh - huh .
Det. Arlen: Jimmy , how long would it take to get from here to Cincinatti by helicopter ?
Jimmy: I do n't know . About half an hour .
Det. Arlen: Great , get _ one _ . I got a sister in Cincinatti I haven't seen in eight months . Let 's go !

helicopter