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.
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Question: Question: Does long-term treatment with methotrexate or tumor necrosis factor alpha inhibitors increase epstein-barr virus load in patients with rheumatoid arthritis?
Answer: Long-term usage of methotrexate or TNFalpha inhibitors in patients with RA does not significantly influence EBV load in PBMCs.

Answer: no

Question: 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.

Answer: yes

Question: Question: Does calreticulin contribute to C1q-dependent recruitment of microglia in the leech Hirudo medicinalis following a CNS injury?
Answer: These data give new insight into calreticulin/C1q interaction in an immune function of neuroprotection, suggesting another molecular target to use in investigation of microglia reactivity in a model of CNS injury.

Answer:
yes