Task: Coherence Classification
Input (English): Sentence 1: Charles and Tony are best friend. 
 Sentence 3: At school, Charles asked Deana out on a date 
 Sentence 4:  They became a couple and had a son 
 Sentence 5:  Their son is twenty and now Tony is asking Deana for a date 
 Given Sentence 2: But Tony had a crush on Deana before Charles.
Output (English): Yes