Q: 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: 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.
A:
no