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.

Input: Consider Input: Edward Snowden:  So , this is data collection for the month of March worldwide , emails and Skype calls . So France , 70 million . Germany , 500 million . Brazil , two billion . Inside the U.S. , 3.1 billion emails and calls . That 's not including any of the telecom company data .
NSA Dep. Director Lowell: Okay , so what 's the collection in Russia ?
Edward Snowden: Russia is _ 1.5 _ billion .
NSA Dep. Director Lowell: Wait , so we 're collecting twice as much in the U.S. as we are in Russia ?

Output: REFERENCE calls


Input: Consider Input: Marilyn Munster:  If there 's anything I can do for you , please call me .
Chester Skinner: Thank you very much . Oh , is there a phone in there ?
Marilyn Munster: Oh yes , we put _ one _ in when we decided to rent the room . That will save you from running down to the coffin in the hall .

Output: REFERENCE phone


Input: Consider Input: Leonard Spinelli:  You may be wondering how I sprained my elbow .
Cory Matthews: Lenny , we know you got hurt at the softball game .
Leonard Spinelli: What game ? You 're not supposed to know about the game . I hurt myself getting out of a turtleneck that shrunk .
Eric Matthews: We know about the game , Lenny .
Cory Matthews: Just do n't let Dad know we know about the game .
Eric Matthews: Yeah .
Leonard Spinelli: Oh , boy . Ok , let 's recap . Your father says there was no game but knows there was _ one _ . You know there was a game but you do n't want your father to know you know . Well let me ask you this - do n't you think he knows you know he knows you know you know he knows , you know ?
Leonard Spinelli: You
Leonard Spinelli: got to excuse me , I 'm on painkllers .


Output: REFERENCE game