Given the task definition and input, reply with output. 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.

Mary Cooper:  Well , I would have to say when he was _ thirteen _ and he tried to build a nuclear reaction in the tool shed .
Sheldon Cooper: Ooh , this is a good one .
Mary Cooper: Now , the first thing you need to know about Shelly is , ever since he was a little boy , he was always concerned with the well - being of others . And he did n't think it was fair for people to pay for electricity , so he was gon na power the entire town for free .
Sheldon Cooper: Tell her about the uranium ! Tell her about the uranium !
Mary Cooper: Oh , well . Well , this is adorable . When he arranged to get some yellow - cake from Chad , I thought he was talking about twinkies from one of his friends .
Sheldon Cooper: Yeah . But I was n't , because I did n't have any friends .
Mary Cooper: No . It turns out this little scallywag was trying to use my Visa card to buy uranium from an African warlord in the country of Chad .
AGE