Task: Coherence Classification
Input (English): Sentence 1: Liza just started dating a guy. 
 Sentence 3: He finally decided to make it official 
 Sentence 4:  They became serious 
 Sentence 5:  She introduced him to her friends as her boyfriend 
 Option 1: They had no title yet. 
 Option 2: He wanted to get married the first date.
Output (English): Option 1