Fill in the blank (_) in the following sentence from the following choices.
Sentence: People were fascinated by the story of the young woman and watched the documentary but ignored the movie because the _ was interesting.

Choice 1: People were fascinated by the story of the young woman and watched the documentary but ignored the movie because the documentary was interesting.
Choice 2: People were fascinated by the story of the young woman and watched the documentary but ignored the movie because the movie was interesting.
Which of the choices is correct? Respond with only "1" or "2" and no additional text.
1
1.