Q: 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.
Cobb: What do you want ?
Saito: Inception . Is it possible ?
Arthur: Of course not .
Saito: If you can steal an idea , why ca n't you plant _ one _ there instead ?
Arthur: Okay , this is me , planting an idea in your mind . I say : do n't think about elephants . What are you thinking about ?
Saito: Elephants ?
Arthur: Right , but it 's not your idea . The dreamer can always remember the genesis of the idea . True inspiration is impossible to fake .
Cobb: No , it 's not .
A:
idea