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 95%. For children with unintelligent parents and with high parental social status, the probability of being lactose intolerant is 54%. For children with intelligent parents and with low parental social status, the probability of being lactose intolerant is 48%. For children with intelligent parents and with high parental social status, the probability of being lactose intolerant is 20%. For children with unintelligent parents and confounder inactive, the probability of high parental social status is 56%. For children with unintelligent parents and confounder active, the probability of high parental social status is 62%. For children with intelligent parents and confounder inactive, the probability of high parental social status is 31%. For children with intelligent parents and confounder active, the probability of high parental social status is 22%. The overall probability of confounder active is 49%.
text_B: Does parents' intelligence positively affect lactose intolerance through parents' social status?
yes.