Task: Coherence Classification
Input (English): Sentence 1: I helped a customer today for nearly four hours. 
 Sentence 3: I helped him pick a nice box and listened to what he was going to say 
 Sentence 4:  I rung him up and sent him on his way, happy to have helped 
 Sentence 5:  Only then did I realize I didn't put the ring in the box 
 Option 1: He was looking for the perfect tv. 
 Option 2: He was looking for the perfect engagement ring.
Output (English): Option 2