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 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.

Ex Output:
yes

Ex Input:
Question: Does positive expression of miR-361-5p indicate better prognosis for breast cancer patients?
Answer: These results indicated that miR-361-5p expression is an independent predictive factor for better prognosis in BC.

Ex Output:
yes

Ex Input:
Question: Is duration of employment a predictor of disability of cleaners : a longitudinal study?
Answer: The cleaning occupation has high disability rates compared with other unskilled occupations. A contribution factor to these high rates is a selection of women with poor health into the occupation.

Ex Output:
no