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.

Kevin O'Leary:  Have you ever sold one of them ?
Lewis - Entrepreneur: I have for $ 30 .
Kevin O'Leary: I 'll give you $ 50 . You want to sell a second one ? Then I 'll take it home , I 'll try it out on some kids , and then I 'll decide if it does n't suck . I mean , that 's the question . Come here , sell me one !
Lewis - Entrepreneur: Then I 'm left with nothing .
Kevin O'Leary: Give me the unit . Look , I 'm paying more than anybody ever paid for _ one _ !
Lewis - Entrepreneur: You 're a busy person , my friend .
Kevin O'Leary: Really ?
Lewis - Entrepreneur: That 's right . What makes me believe that you 're gon na take this product ...
Kevin O'Leary: I would never give you $ 50 if I was n't gon na use it . * Never * would I give you 50 !
Robert Herjavec: Lewis , he 's the cheapest guy in the world .
Lewis - Entrepreneur: Okay , give me 100 and you can take it .
Kevin O'Leary: No . Outrageous ! That 's crazy .
Lewis - Entrepreneur: I 'm selling it for $ 79 . You 're only paying $ 21 extra .
Kevin O'Leary: The only way I would do that is I 'll pay 100 for 2 , then I 'll mark it up and sell it for a higher price to Robert .
Arlene Dickinson: Lewis , do n't do it . I love that you 're standing up and telling Kevin that you 're not gon na sell it .
Lewis - Entrepreneur: I came here today to make a deal .
Kevin O'Leary: But Lewis , I do n't know if suck factor 6 is involved here . Lewis , honey , sweetie , poopsie , you gon na sell me one or not ?
REFERENCE unit