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.

[EX Q]: Question: Does interleukin-6 stimulate rat myometrial contractions in an in vitro model?
Answer: IL-6 in the presence or absence of membranes, over a four log fold dose range, did not stimulate uterine contractions.
[EX A]: no

[EX Q]: Question: Does the extent of lymphadenectomy for pTXNO prostate cancer affect prostate cancer outcome in the prostate specific antigen era?
Answer: The extent of lymphadenectomy does not appear to affect prostate cancer outcome in lymph node negative cases. This includes patients with high preoperative PSA, high pathological grade and extracapsular disease. These results suggest that under staging is not present in apparently node negative cases with limited lymphadenectomy and, even if present, its impact on outcome is likely to be negligible.
[EX A]: no

[EX Q]: Question: Are infections caused by multidrug resistant organisms associated with overall , all-cause mortality in the surgical intensive care unit : the 20,000 foot view?
Answer: Despite a steady rise in the proportion of resistant bacterial infections in the ICU, crude mortality rates have decreased over time. The rates of resistant infections do not appear to be a significant factor in overall mortality in our surgical ICU patients.
[EX A]:
no