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: Is lactose maldigestion an impediment to the intake of 1500 mg calcium daily as dairy products?
Answer: The symptoms resulting from lactose maldigestion are not a major impediment to the ingestion of a dairy-rich diet supplying approximately 1500 mg Ca/d.

Ex Output:
no

Ex Input:
Question: Is [ The incidence of postoperative nausea and vomiting effected by routinely applied manual pre-oxygenation during induction of anesthesia ]?
Answer: Since neither routine pre-intubation positive pressure mask ventilation nor the medical qualification of the anesthesilogist affect the incidence of PONV neither variable needs to be taken into account in studies concerning PONV.

Ex Output:
no

Ex Input:
Question: Does n-methyl-d-aspartate receptor autoimmunity affect cognitive performance in herpes simplex encephalitis?
Answer: Anti-NMDAR autoimmunity is a common complication to HSE that develops within 3months after onset of disease. The association to impaired neurocognitive recovery could have therapeutical implications, as central nervous system autoimmunity is potentially responsive to immunotherapy.

Ex Output:
yes