Task: Coherence Classification
Input (English): Sentence 1: David went to china with his girlfriend. 
 Sentence 3: They tried to climb the great wall 
 Sentence 4:  David's girlfriend wanted to stop after 20 minutes in 
 Sentence 5:  They ended up leaving 
 Option 1: They climbed the Great Wall of China together. 
 Option 2: They went to beijing first.
Output (English): Option 2