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: Paul Allen:  Bill , why did you tell them we had an operating system ? We do n't have a thing to sell them now , you know ? We 're dead !
Bill Gates: We 're not dead , you 're going to give us that miracle , right , Paul ?
Paul Allen: Huh ? Oh yeah , right ...
Bill Gates: Come on , I thought you said you knew a guy we could buy an operating system from !
Paul Allen: I said I " sort of " know _ one _ .
Bill Gates: Sort of ? Do n't tell me " sort of " ! I just told IBM !
Paul Allen: Sort of ...

guy