Given the task definition and input, reply with output. 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 modified sequential Helicobacter pylori eradication therapy using high dose omeprazole and amoxicillin in the initial phase in the extensive metaboliser Turkish patients for CYP2C19 polymorphism ineffective?
Answer: This modified high-dose sequential therapy was ineffective in a Turkish sample, nearly all of whom had EM in terms of CYP2C19 gene status.
yes