Fill in the blank (_) in the following sentence from the following choices.
Sentence: Robert helped create an internet viral video sensation of Kyle when _ directed the video.

Choice 1: Robert helped create an internet viral video sensation of Kyle when Robert directed the video.
Choice 2: Robert helped create an internet viral video sensation of Kyle when Kyle directed the video.
Which of the choices is correct? Respond with only "1" or "2" and no additional text.
1
1.