Task: Coherence Classification
Input (English): Sentence 1: Matt went to the doctor for a checkup. 
 Sentence 3: The doctor was getting old and past retirement age 
 Sentence 4:  Matt decided he needed to find a new doctor 
 Sentence 5:  Matt never saw the doctor again 
 Option 1: He realized his doctor was being forgetful. 
 Option 2: He realized his doctor was too busy.
Output (English): Option 1