Fill in the blank (_) in the following sentence from the following choices.
Sentence: Elena needed to have a crown put on her tooth by Megan; _ was a dentist.

Choice 1: Elena needed to have a crown put on her tooth by Megan; Elena was a dentist.
Choice 2: Elena needed to have a crown put on her tooth by Megan; Megan was a dentist.
Which of the choices is correct? Respond with only "1" or "2" and no additional text.
2
2.