Task: Coherence Classification
Input (English): Sentence 1: Adam's dog was sick. 
 Sentence 3: The vet checked him out thoroughly 
 Sentence 4:  He couldn't find the problem 
 Sentence 5:  Adam took the dog home and watched him carefully 
 Option 1: They took him to be put down. 
 Option 2: He took him to the vet.
Output (English): Option 2