Definition: 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: Question: Does ethnic background influence outcome for return-to-work in work-related interdisciplinary rehabilitation for long-term pain : 1- and 3-year follow-up?
Answer: Immigrants can benefit from a rehabilitation programme to the same extent as native Swedes concerning return-to-work rate, but seem to have limitations in assimilating the other objectives of the programme.
Output:
no