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: Jerry:  So , Puddy , this is a pretty good move for you , huh ? No more " grease monkey " .
David Puddy: I do n't much care for that term .
Jerry: Oh . Sorry , I did n't know ...
David Puddy: No , I do n't know too many monkeys who could take apart a fuel injector .
Jerry: I saw _ one _ once that could do sign language .
David Puddy: Yeah , I saw that one . Uh ... Koko .
Jerry: Yeah , Koko .
David Puddy: Right , Koko . That chimp 's alright . High - five .

monkeys