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 _. There are several possible answers, you'll need to choose the proper one. Carefully read the given text, pay special attention to the marked number, think about what (unwritten) information the marked number holds inside, choose the most adequate word(s) from the optional answers. If none of them seems right to you, there's also an option for other. If your answer is "REFERENCE", also write the reference entity, otherwise write the implicit option name. Options to choose from are:
REFERENCE: Some object which is being mentioned in the text before or after the target number. The reference answer has a higher priority than any other. If both Reference and another answer are possible, prioritize the Reference.
YEAR: Describing a calendric year
AGE: Describing someone's age
CURRENCY: Reference to some monetary value e.g dollar, euro etc.
PEOPLE: Describing a single/plural persons
TIME: Describing a time of the day. Usually you can add the word o'clock after those numbers.
OTHER: Some other option, which isn't listed here.

Let me give you an example: Jess Mastriani: No, I don't want another crooler, thank you very much.
 FBI Agent Nicole Scott: But it's good for you. It's got... honeyglaze. Please die for this crooler, Jess.
 Jess Mastriani: I've had _ two _ already. Who eats three croolers in a night? 
FBI Agent Nicole Scott: Take a look. [Nicole takes a huge bite] Mmmmm, Mmmmm, Mmmmm!
The answer to this example can be: REFERENCE crooler
Here is why: In this example, the number two refers to something that appears in this text. In this example, it refers to the word: crooler.

OK. solve this:
Aaron Hotchner:  We 're looking for an LDSK , or a long - distance serial killer . He 's a very skilled marksman with a god complex .
Derek Morgan: He derives pleasure out of remaining unseen and determining the fates of people from afar .
Jennifer Jareau: He 's criminally sophisticated and methodical , concealing his method of ingress and egress , leaving little evidence behind in the sniper perches .
Alex Blake: This suggests a great deal of experience , so this unsub has a military or a law enforcement background , possibly even Special Forces .
Dr. Spencer Reid: His victims at first to be targets of opportunity , but it now appears that one or more of them are targets of choice . The remaining victims were collateral damage to be used as a forensic countermeasure ; similar to what John Allen Muhammad and Lee Boyd Malvo did with the D.C. sniper case in _ 2002 _ .
Derek Morgan: This means there 's some unknown connection between one or more victims at the first and second crime scenes .
Agent Tanya Mays: What about the Caucasian male that an eyewitness saw at the plaza ?
Derek Morgan: It 's something to consider , but we ca n't rule out others . We know that the unsub is likely in his late thirties to forties , in order to have the means and patience to plan and execute these attacks .
Aaron Hotchner: If he still has specific targets , it 's likely he wo n't wait long to attack , so the public needs to remain vigilant .
Answer:
YEAR