With no explanation, label text_A→text_B with either "no" or "yes".
text_A: For infants with nonsmoking mothers and low infant birth weight, the probability of freckles is 70%. For infants with nonsmoking mothers and normal infant birth weight, the probability of freckles is 29%. For infants with smoking mothers and low infant birth weight, the probability of freckles is 97%. For infants with smoking mothers and normal infant birth weight, the probability of freckles is 65%. For infants with nonsmoking mothers and with poor health, the probability of normal infant birth weight is 47%. For infants with nonsmoking mothers and with good health, the probability of normal infant birth weight is 94%. For infants with smoking mothers and with poor health, the probability of normal infant birth weight is 17%. For infants with smoking mothers and with good health, the probability of normal infant birth weight is 60%. The overall probability of good health is 49%.
text_B: Does maternal smoking status positively affect freckles through infant's birth weight?
yes.