Fill in the blank (_) in the following sentence from the following choices.
Sentence: Kyle used the soap to give Neil a bath after they got dirty, since _ was a messy child.

Choice 1: Kyle used the soap to give Neil a bath after they got dirty, since Kyle was a messy child.
Choice 2: Kyle used the soap to give Neil a bath after they got dirty, since Neil was a messy child.
Which of the choices is correct? Respond with only "1" or "2" and no additional text.
2
2.