You will be given a definition of a task first, then some input of the task.
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.

Bradley Buzzcut: Alright , what 's the square root of 9 ? Beavis and Butt - head ! Do you know the answer ?
Butt-head: Uh ... could you like , repeat the question a few times ?
Bradley Buzzcut: The square root of the number 9 ! Answer ! Pronto !
Beavis: Um ... _ 60 _ ?
Butt-head: Uh ... 90210 ?
Beavis: Yeah , um ... LMNOP ?
Output:
root