With no explanation, label text_A→text_B with either "no" or "yes".
text_A: For normal weight people and without diabetes, the probability of long lifespan is 65%. For normal weight people and with diabetes, the probability of long lifespan is 95%. For obese people and without diabetes, the probability of long lifespan is 56%. For obese people and with diabetes, the probability of long lifespan is 88%. For normal weight people and nonsmokers, the probability of having diabetes is 79%. For normal weight people and smokers, the probability of having diabetes is 67%. For obese people and nonsmokers, the probability of having diabetes is 40%. For obese people and smokers, the probability of having diabetes is 25%. The overall probability of smoker is 95%.
text_B: Does obesity positively affect lifespan through diabetes?
no.