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.
Q: Kouichi Sakakibara:  I understand that I no longer exist for them . But , why they do this ?
Mei Misaki: It is a natural question . Do you remember the story about Misaki who died twenty - six years ago ?
Kouichi Sakakibara: Yes .
Mei Misaki: That 's what started it all . After that , the class three was close to death .
Kouichi Sakakibara: Death ?
Mei Misaki: First happened to the class three the following year to Misaki 's classmates graduation . Once it happens , once it begins , someone dies every month . Whether a student or someone in their family .
Kouichi Sakakibara: What is " It " ?
Mei Misaki: It 's when ... the number of students in the class is incremented by one .
Kouichi Sakakibara: Incremented ? Who ?
Mei Misaki: Nobody knows , they may never know who 's that extra _ one _ .
Kouichi Sakakibara: Extra one ?
A:
REFERENCE number