Task: Coherence Classification
Input (English): Sentence 1: Justin bought a new mountain bike. 
 Sentence 3: His tire ran over something sharp and went flat 
 Sentence 4:  Another biker passed by and offered to help patch the tire 
 Sentence 5:  Justin thanked the biker and exchanged phone numbers with him 
 Given Sentence 2: He went biking on an old trail.
Output (English): Yes