You will be given a definition of a task first, then some input of the task.
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: Is overexpression of p53 in squamous cell carcinoma of the tongue in young patients with no known risk factors associated with mutations in exons 5-9?
Answer: These data suggest that the molecular mechanisms by which the young individuals with no risk factors had altered p53 function in oral squamous cell carcinoma may differ from those of the more typical population of individuals who have this malignancy develop.
Output:
no