Task: Coherence Classification
Input (English): Sentence 1: One day Samuel and his friends decided to go to the sand dunes. 
 Sentence 3: Then they walked down to the beach 
 Sentence 4:  They played in the water a bit 
 Sentence 5:  Then they went home exhausted 
 Option 1: They went with their bicycles. 
 Option 2: First they rode a dune buggy.
Output (English): Option 2