Task: Coherence Classification
Input (English): Sentence 1: Robert was relaxing in the local river. 
 Sentence 3: It seemed like it was going to be a good day 
 Sentence 4:  Suddenly, Robert heard a popping noise and began to sink 
 Sentence 5:  His inner tube had deflated 
 Option 1: He sat in an inflatable inner tube. 
 Option 2: He was floating on his back.
Output (English): Option 1