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: Kramer:  How often do you cut your toe nails ?
Jerry Seinfeld: I would say every _ two _ and a half to eight weeks .
Kramer: 'cause the other night , you know , I was sleeping with Marion , I rolled over and I cut her ankle with my big toe .

weeks