In this task, you're given a pair of sentences, sentence 1 and sentence 2. Your job is to determine if the two sentences clearly agree/disagree with each other, or if this can't be determined. Indicate your answer as yes or no respectively.

Ex Input:
Sentence 1: Citicorp could have agreed to market Travelers insurance or Salomon brokerage services, and vice versa, without actually becoming one company. Sentence 2: Citicorp had the opportunity to market the insurance companies without merging.

Ex Output:
yes


Ex Input:
Sentence 1: They stood again, tips to the sky and left hands out in salute. Sentence 2: They were waving their right hands. 

Ex Output:
yes


Ex Input:
Sentence 1: killing lots of fire ants Sentence 2: Killing lots of bees

Ex Output:

yes