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 Q]: Question: Is the ribbon-associated protein C-terminal-binding protein 1 essential for the structure and function of retinal ribbon synapses?
Answer: Overall the results suggest that CtBP1 protein is not essential for the formation of functional ribbon synapses in the retina.
[EX A]: no

[EX Q]: Question: Does usability testing found problems for novice users of pediatric portals?
Answer: Despite parental involvement and prior heuristic testing, scenario-based testing demonstrated difficulties in navigation, medical language complexity, error recovery, and provider-based organizational schema. While such usability testing can be expensive, the current study demonstrates that it can assist in making healthcare system interfaces for laypersons more user-friendly and potentially more functional for patients and their families.
[EX A]: yes

[EX Q]: Question: Is induction Chemotherapy Superior to a Surgery-First Strategy for Clinical N1 Non-Small Cell Lung Cancer?
Answer: Induction chemotherapy for cN1 NSCLC is not associated with improved survival. This finding supports the currently recommended treatment paradigm of surgery first for cN1 NSCLC.
[EX A]:
no