Task: Coherence Classification
Input (English): Sentence 1: Greg was a boy from a very prestigious family. 
 Sentence 3: Greg wanted to know who his real mother was 
 Sentence 4:  He hired a private investigator 
 Sentence 5:  After much diligent research, he found his real mother 
 Given Sentence 2: He recently found out he was adopted.
Output (English): Yes