Task: Coherence Classification
Input (English): Sentence 1: Sean was playing a tune on his guitar. 
 Sentence 3: He decided to teach his girlfriend how to play it 
 Sentence 4:  She learned a basic beat quickly 
 Sentence 5:  Together, they were able to make a little song 
 Given Sentence 2: He wanted some drums to back him up.
Output (English): Yes