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.

[Q]: Question: Does presence of the full-length KIR2DS4 gene reduce the chance of rheumatoid arthritis patients to respond to methotrexate treatment?
Answer: Our results suggest that the response of RA patients with medium ESR values to MTX treatment may be dependent on the full-length KIR2DS4 gene.
[A]: yes

[Q]: Question: Does thickness of CAD-CAM composite resin overlay influences fatigue resistance of endodontically treated premolars?
Answer: Thick FiltekMZ100 composite resin onlays showed higher fatigue resistance than thin ones and may be associated with fractures that are less subgingival.
[A]: yes

[Q]: Question: Is food production and wastage in relation to nutritional intake in a general district hospital -- wastage reduced by training the staff?
Answer: Despite a supply of food, which was much higher than the patients' needs, the patients have only approx. 60% of their energy need covered. We suggest a reorganization of nutrition in hospitals, so that this is made the responsibility of specific staff members.
[A]:
no