Fill in the blank (_) in the following sentence from the following choices.
Sentence: He was going to use his boat in the river but the _ was too old.

Choice 1: He was going to use his boat in the river but the river was too old.
Choice 2: He was going to use his boat in the river but the boat was too old.
Which of the choices is correct? Respond with only "1" or "2" and no additional text.
2
2.