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.

Question: Does a corticotropin releasing hormone receptor antagonist delay parturition in rats?
Answer: Antagonism of CRH receptors in rats has no effect on the length of gestational period, pup weight or number of pups per litter. Further studies are needed to define the role of CRH and its antagonism in primate pregnancy, as has been done in sheep.
no