With no explanation, label text_A→text_B with either "no" or "yes".
text_A: For children with unintelligent parents and with low parental social status, the probability of being lactose intolerant is 72%. For children with unintelligent parents and with high parental social status, the probability of being lactose intolerant is 50%. For children with intelligent parents and with low parental social status, the probability of being lactose intolerant is 16%. For children with intelligent parents and with high parental social status, the probability of being lactose intolerant is 12%. For children with unintelligent parents and confounder inactive, the probability of high parental social status is 95%. For children with unintelligent parents and confounder active, the probability of high parental social status is 59%. For children with intelligent parents and confounder inactive, the probability of high parental social status is 70%. For children with intelligent parents and confounder active, the probability of high parental social status is 25%. The overall probability of confounder active is 45%.
text_B: Does parents' intelligence positively affect lactose intolerance through parents' social status?
yes.