Task: Coherence Classification
Input (English): Sentence 1: John wanted to sell his home. 
 Sentence 3: He asked the realtor to help him sell his home 
 Sentence 4:  The realtor agreed 
 Sentence 5:  The realtor sold John's home 
 Option 1: John couldn't get a realtor. 
 Option 2: John called a realtor.
Output (English): Option 2