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:
Colonel Dave Dixon:  Yeah , all - night screaming , projectile vomiting , nuclear diapers ... you have no idea . The reason they make them so damn cute is so you do n't suffocate 'em in their sleep .
Senior Airman Simon Wells: Sir , you have * four * kids .
Colonel Dave Dixon: Yeah , why do you think I enjoy my job so much ? Do n't get me wrong , I love the little buggers to death , but trust me , havin ' four kids makes going through a Stargate and facin ' off against alien bad guys look like nothin' . This is relaxing .
Senior Airman Simon Wells: Then why 'd you have _ four _ ?
Colonel Dave Dixon: Well , one 's pretty bad , but you figure you got ta have two so the little guy can have a brother or sister , right ? Then you have two boys , and the wife says she want a girl so you figure " Hell , three ca n't be much worse than two " , right ? What you do n't realize is your brain is fried 'cause you haven't slept . After three , four is no big deal . You 're so deep in it , nothin' seems to matter any more . It 's chaos . You 're just tryin ' to make it through each day alive . In the end you spend all the energy you have left tryin ' to get 'em into bed only to lie awake prayin ' they do n't get hooked on drugs , hurt , or worse ... wind up dead in an alley somewhere .
Senior Airman Simon Wells: Ca n't wait , sir .
Colonel Dave Dixon: Yeah , miracle of birth , my ass . I 'll tell you what a miracle is , birth control that works .
Answer:
REFERENCE kids