Task: Coherence Classification
Input (English): Sentence 1: Greg's old staircase needed work. 
 Sentence 3: His buddy came over with tools and fixed all the creaky spots 
 Sentence 4:  The stairs no longer made annoying noise, and he paid his friend 
 Sentence 5:  His friend took his tools and went home 
 Given Sentence 2: Greg called his buddy to come work on the stairs.
Output (English): Yes