Teacher: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.
Teacher: Now, understand the problem? Solve this instance: Question: Does direction of injection affect the spread of spinal bupivacaine in parturients?
Answer: The direction of the aperture of the Whitacre needle does not influence the spread of hyperbaric bupivacaine in the term parturient.
Student:
no