Fill in the blank (_) in the following sentence from the following choices.
Sentence: Michael had done more travelling and sightseeing than Samuel. _ thought a long international flight was worth it for the experience.

Choice 1: Michael had done more travelling and sightseeing than Samuel. Michael thought a long international flight was worth it for the experience.
Choice 2: Michael had done more travelling and sightseeing than Samuel. Samuel thought a long international flight was worth it for the experience.
Which of the choices is correct? Respond with only "1" or "2" and no additional text.
1
1.