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 Input:
Question: Does increased endometrial thickness on the day of human chorionic gonadotropin injection adversely affect pregnancy or implantation rates following in vitro fertilization-embryo transfer?
Answer: No adverse effects of a thickened endometrium were demonstrated on implantation, pregnancy, or abortion rates in the first IVF-ET cycle. These findings fail to corroborate with those of Weissman et al. and support those of Yakin et al.

Ex Output:
no

Ex Input:
Question: Is vitamin D deficiency in septic patients at ICU admission a mortality predictor?
Answer: In our cohort, septic patients showed a significantly lower vitamin D level than trauma patients in comparison to age cohort patients with the same demographic/clinical characteristics, but no clear relationship between vitamin D level and outcome was found. Further studies with larger samples are needed to clarify the prognostic role of vitamin D and nutraceutical interventions in critically ill patients.

Ex Output:
no

Ex Input:
Question: Does loss of Frzb and Sfrp1 differentially affect joint homeostasis in instability-induced osteoarthritis?
Answer: Using the DMM model, we demonstrated that FRZB and SFRP1 differentially modulate joint homeostasis in two distinct compartments of the joint. These data highlight the fine-tuning of Wnt signaling in joint homeostasis and disease, show differential regulation of the cascade in cartilage and subchondral bone, and provide further evidence for a role of endogenous Wnt modulators as key players in OA.

Ex Output:
yes