Fill in the blank (_) in the following sentence from the following choices.
Sentence: Aaron gave to William a wool blanket since it was cold outside. _ was a good friend.

Choice 1: Aaron gave to William a wool blanket since it was cold outside. Aaron was a good friend.
Choice 2: Aaron gave to William a wool blanket since it was cold outside. William was a good friend.
Which of the choices is correct? Respond with only "1" or "2" and no additional text.
1
1.