Detailed Instructions: 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.
Q: Sentence 1: Until the highway construction in the modern era, access to the jungle interior had been and in some cases, still is only by river. Sentence 2: Every place in the jungle is serviced by highways and large airports.
A:
yes