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.
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Question: Question: Are common genetic variants related to vitamin D status associated with esophageal squamous cell carcinoma risk in China?
Answer: Our results suggested that common genetic variants related to vitamin D levels are not associated with risk of ESCC in this Chinese population.

Answer: no

Question: Question: Are standard Radiographs Sufficient for Assessing Knee Mechanical Axis in Patients With Advanced Osteoarthritis?
Answer: Standard radiographs are not sufficient for determining MA, and HTA radiographs should be used while making surgical decisions aimed at correcting alignment to within 3 or for assessing alignment post-total knee arthroplasty. In addition, surgical alignment outcomes reported in previous research using standard radiographs should be viewed with caution.

Answer: no

Question: Question: Do endocrine tumors of the gastrointestinal tract and pancreas : grading , tumor size and proliferation index predict malignant behavior?
Answer: The findings suggest that tumor size, tumor grade and Ki-67 index do not accurately predict malignant behavior of GIP ETs.

Answer:
no