Task: Coherence Classification
Input (English): Sentence 1: Bill bought an aquarium. 
 Sentence 3: The next day he saw that many fish died 
 Sentence 4:  He was sad 
 Sentence 5:  He decided to only use a few fish next time so they all had air 
 Option 1: He filled it with lots of fish. 
 Option 2: He was trying to decide what fish to buy.
Output (English): Option 1