TASK 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 _. 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.
PROBLEM: NOS-4-A2:  Hear me , little _ one _ , NOS-4-A2 calls to you .
XR: My Dark Master ...
XR: I
XR: thought I deleted that file .

SOLUTION: PEOPLE

PROBLEM: Kouichi Sakakibara:  You must be kidding .
Naoya Teshigawara: Why would I joke about this ? I tried to dig a little , since he was acting strange lately . And he said he did not remember the things we did together as kids . He did not remember much about primary school .
Kouichi Sakakibara: And then ... ?
Naoya Teshigawara: I prepared myself and asked : " You 're not really Kazami , right ? " , " You are the extra one in the class , right ? " He looked me scared at first , then he was furious . He was acting really suspiciously , I was sure it was him . Since the recording said " Send him back to the death " All of us would be saved .
Kouichi Sakakibara: Do n't tell me ... Did you kill him ?
Mei Misaki: Is that true ?
Naoya Teshigawara: I did n't mean to do it ! The attack began and ended outside on the balcony . And the next thing I knew ... He was lying on the floor , blood coming out of his head . I panicked and ran down the hall . I saw you entering this room .
Kouichi Sakakibara: So you wanted to know if Kazami was the extra _ one _ ?
Naoya Teshigawara: Yeah I thought that if the extra one dies , no one would have noticed him . But you two say that still remember him , so it must have been a mistake . Say , Sakaki , am I wrong ?
Kouichi Sakakibara: Is that , or he is not dead yet .
Naoya Teshigawara: Uh ?
Kouichi Sakakibara: A fall in two stories high , he may have survived yet .

SOLUTION: PEOPLE

PROBLEM: Abigail Patterson:  What 's this about a pizza ?
Michael: Well , you ordered _ one _ .
Abigail Patterson: I did n't . Well , will you have to pay for it ?
Michael: Oh no ... I 'll have to eat it .

SOLUTION:
REFERENCE pizza