Task: Coherence Classification
Input (English): Sentence 1: My wife's sister came to visit last week. 
 Sentence 3: She mentioned having big news 
 Sentence 4:  When she arrived I congratulated her on her pregnancy 
 Sentence 5:  Unfortunately that wasn't her big news 
 Option 1: She was excited to see us. 
 Option 2: But I was at work when she came.
Output (English): Option 1