Fill in the blank (_) in the following sentence from the following choices.
Sentence: The chef tried to store the onions inside the containers but the _ were too small.

Choice 1: The chef tried to store the onions inside the containers but the containers were too small.
Choice 2: The chef tried to store the onions inside the containers but the onions were too small.
Which of the choices is correct? Respond with only "1" or "2" and no additional text.
1
2. The chef tried to store the onions inside the containers but the onions were too small.