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: One year after the auction, the population of Las Vegas had ballooned to 1500 residents, a portent of things to come for the next ninety years. Sentence 2: 20,000 people lived in Las Vegas by a year after the auction.
A:
yes