Task: Coherence Classification
Input (English): Sentence 1: Mark had a report due on tigers for school. 
 Sentence 3: Mark really enjoyed looking at pictures of tigers 
 Sentence 4:  He also enjoyed all the books he got to read about tigers 
 Sentence 5:  Mark thinks he'll do very well on his report 
 Given Sentence 2: He spent all week doing research on tigers.
Output (English): Yes