instruction:
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.
question:
Question: Are cognitive-behavioral phenotypes of Williams syndrome associated with genetic variation in the GTF2I gene , in a healthy population?
Answer: These findings implicate the GTF2I gene in the neurogenetic basis of social communication and social anxiety, both in Williams syndrome and among individuals in healthy populations.
answer:
yes


question:
Question: Is the relationship between insomnia with short sleep duration associated with hypercholesterolemia : a cross-sectional study?
Answer: Insomnia with short sleep duration was associated with increased odds of hypercholesterolemia. Caregivers in clinical practice should watch out for the effect brought by this novel factor.
answer:
yes


question:
Question: Is mortality in Parkinson 's disease associated with the severity of early dopaminergic defect?
Answer: Unlike age and early motor symptom severity, dopamine synthesis capacity, as measured with PET, does not predict survival in PD.
answer:

no