Given a passage with a question and an answer to that question, classify if the answer actually answers the question into 'yes' or 'no'. Output 'yes' if the answer answers the question and output 'no' if the answer does not answer the question.
Q: Question: Is playground Safety Associated With Playground , Park , and Neighborhood Characteristics?
Answer: Park safety levels need to be improved to reduce the risk of physical injuries. Future studies examining cause-effect associations between environmental features and playground safety are warranted.
A:
yes