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: Do athymic nude rats develop severe pulmonary hypertension following monocrotaline administration?
Answer: Athymic nude rats developed severer PH than euthymic rats along with a greater number of mast cells and severer histopathological changes, such as thickening of the alveolar wall. Mast cell proliferation was considered to play a pivotal role in the development of PH in MCT-PH.
yes