Task: Coherence Classification
Input (English): Sentence 1: Joe had a itch on his back. 
 Sentence 3: So he called Andrew to scratch his back 
 Sentence 4:  Andrew began to scratch Joe's back 
 Sentence 5:  Joe felt better 
 Option 1: So Joe tried to scratch it but could not reach it. 
 Option 2: So Joe decided to get a massage to make his back better.
Output (English): Option 1