Task: Coherence Classification
Input (English): Sentence 1: Cal couldn't find his keys. 
 Sentence 3: Cal searched everywhere, looking in all the obvious places 
 Sentence 4:  He put his hands in his pockets in frustration 
 Sentence 5:  Which of course is where Cal found his keys 
 Given Sentence 2: He had a tray by the door for them and they weren't there.
Output (English): Yes