Task: Coherence Classification
Input (English): Sentence 1: Natalie wanted a tropical fish tank inside of her home. 
 Sentence 3: Then Natalie went to the pet store that was closest to her home 
 Sentence 4:  At the store she choose several fish and a small fish tank 
 Sentence 5:  Natalie then went home to set up the tank with the fish 
 Option 1: She researched the type of fish she wanted and their needs. 
 Option 2: She researched the type of fish she wanted and their needs but will never set up a tank.
Output (English): Option 1