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.

Example Input: Question: Do simple counts of ADL dependencies adequately reflect older adults ' preferences toward states of functional impairment?
Answer: Our results suggest that the count of ADL dependencies does not adequately represent the utility for a health state. Cost-effectiveness analyses and other evaluations of programs that prevent or treat functional dependency should apply utility weights rather than relying on simple ADL counts.
Example Output: no

Example Input: Question: Are mutational status of KIT and PDGFRA and expression of PDGFRA associated with prognosis after curative resection of primary gastrointestinal stromal tumors ( GISTs )?
Answer: Our data do not support the notion that expression of PDGFRA or mutations in KIT or PDGFRA are independent prognostic factors after curative resection of primary GIST.
Example Output: no

Example Input: Question: Does diclofenac premedication but not intra-articular ropivacaine alleviate pain following day-case knee arthroscopy?
Answer: Diclofenac premedication p.o. reduced the VAS scores at eight hours postoperatively while intra-articular ropivacaine did not.
Example Output:
yes