Detailed Instructions: 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.
Problem:Question: Are ammonia and female sex hormones concentrations in human preovulatory follicular fluid directly related?
Answer: Ammonia production is not directly related to intrafollicular female sex hormones concentrations. The accumulation of ammonia is likely to account for the alkaline pH of the human preovulatory FF.
Solution:
no