Q: 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 _. Your answer should be chosen from the given text, and should not contain other words.
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 ?
A:
calls