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.

Example Input: Sentence 1: oh me to boy i have to hunt hunt them down uh-huh Sentence 2: I never have to hunt anyone down, thankfully. 
Example Output: yes

Example Input: Sentence 1: A rock inscription from Emperor Ashoka indicates that Delhi was a major point on the trade route between the northwest frontier and Bengal in the third century b.c. Sentence 2: Delhi was not a point of trade until the 5th century AD, according to the rock inscription.
Example Output: yes

Example Input: Sentence 1: The barrel-vaulted chambers were discovered while excavating for a nearby housing project. Sentence 2: Excavations were taking place for a nearby housing project.
Example Output:
yes