Task: Coherence Classification
Input (English): Sentence1: Jen brought her cat Lee to the vet for a checkup. Sentence2: The veterinarian, Doctor Mike, found three fleas on Lee. Sentence3: Doctor Mike suggested a flea dip to Jen. Sentence4: Jen refused because she did not want Lee to be dipped in chemicals. 
 Sentence5: Jen noticed that Lee's flea problem quickly got worse.
Output (English): Yes