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.

Input: Consider Input: Question: Is low serum bilirubin concentration a predictor of chronic kidney disease?
Answer: Our study demonstrated that serum total bilirubin concentration could be a novel risk factor for the progression of CKD, defined as eGFR <60 ml/min/1.73 m(2), in the general population.

Output: yes

Input: Consider Input: Question: Do elevated serum progesterone levels on the day of human chorionic gonadotropin administration predict outcome in assisted reproduction cycles?
Answer: Serum P levels before hCG administration do not predict the outcome of ART cycles in patients suppressed with GnRH-a before hMG stimulation. Lower fertilization rates observed in the high P cycles did not have an effect on clinical outcome.

Output: no

Input: Consider Input: Question: Do compound heterozygotes for filaggrin gene mutations always show severe atopic dermatitis?
Answer: Our results suggest that individuals with bi-allelic FLG mutations do not always have severe AD and confirm that not all individuals with bi-allelic FLG mutations have AD.
Output: no