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 laser in situ keratomileusis surgery safe for military personnel?
Answer: There is a high risk of potential traumatic flap problems after LASIK and it is not recommended in army service.

Ex Output:
no


Ex Input:
Question: Do concentrated polymer brushes induce the expression of inflammatory and angiogeneic genes in human umbilical vein endothelial cells?
Answer: Micro-patterned CPBs, irrespective of chemical structure or adhesion area, do not induce the expression of important pro-inflammatory and angiogenic mediators in endothelial cells.

Ex Output:

no