Q: 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.
Sentence 1: The graceful open?work spire was added in the 15th century by Johannes H??ltz of Cologne. Sentence 2: Johannes Hiltz added the open work spire in the 15th century.
A:
yes