Task: Coherence Classification
Input (English): Sentence 1: The rocket was never found again. 
 Sentence 3: It sped out of sight 
 Sentence 4:  It was a model rocket 
 Sentence 5:  I called it the Grasshopper 
 Option 1: NASA tried to locate it, with no success. 
 Option 2: We looked for it for a few minutes.
Output (English): Option 2