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.

Ex Input:
Question: Is variation in mortality among populations higher for pymetrozine than for imidacloprid and spiromesifen in Trialeurodes vaporariorum in greenhouses in Finland?
Answer: High variation in resistance levels to pymetrozine among populations within natural whitefly dispersal limits reflects variation in the usage of this compound among individual greenhouse crop producers. Thus, resistance management is recommended at the individual greenhouse crop producer level, even in a dense production cluster. © 2014 Society of Chemical Industry.

Ex Output:
yes


Ex Input:
Question: Does short-term enteral glutamine enhance protein accretion in burned children : a stable isotope study?
Answer: Rapid protein accretion does not occur with short-term enteral glutamine supplementation. Several days of glutamine supplementation may be required to restore plasma glutamine levels and stimulate protein synthesis.

Ex Output:
no


Ex Input:
Question: Does both body weight and BMI predict improvement in symptom and functioning for patients with major depressive disorder?
Answer: This is a short-term trial with relatively small sample size.

Ex Output:

yes