Fill in the blank (_) in the following sentence from the following choices.
Sentence: Bill replaced the chicken bone in his soup with cabbage after it cooked for a couple of hours, the _ was smooth.

Choice 1: Bill replaced the chicken bone in his soup with cabbage after it cooked for a couple of hours, the bone was smooth.
Choice 2: Bill replaced the chicken bone in his soup with cabbage after it cooked for a couple of hours, the cabbage was smooth.
Which of the choices is correct? Respond with only "1" or "2" and no additional text.
2
1. The sentence is about Bill replacing a bone in his soup with cabbage, so the blank should be filled with "bone." The correct