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 _. Your answer should be chosen from the given text, and should not contain other words.
Input: Mel Brooks:  See , there were people like Glen Kelly that lived _ 50 _ , 60 years ago at MGM . They were called Roger Edens .

years