Task: Coherence Classification
Input (English): Sentence 1: We finally were able to sell the house. 
 Sentence 3: It then all happened so fast at the end 
 Sentence 4:  Next thing we knew the house was sold 
 Sentence 5:  And we were watching the new one be built 
 Option 1: We spent months getting it ready and then moving. 
 Option 2: But then the buyer suddenly backed out .
Output (English): Option 1