With no explanation, label text_A→text_B with either "no" or "yes".
text_A: For people who do not have a brother and nonsmokers, the probability of lung cancer is 61%. For people who do not have a brother and smokers, the probability of lung cancer is 31%. For people who have a brother and nonsmokers, the probability of lung cancer is 69%. For people who have a brother and smokers, the probability of lung cancer is 32%. For people who do not have a brother and with low pollution, the probability of smoking is 62%. For people who do not have a brother and with high pollution, the probability of smoking is 34%. For people who have a brother and with low pollution, the probability of smoking is 31%. For people who have a brother and with high pollution, the probability of smoking is 9%. The overall probability of high pollution is 44%.
text_B: Does having a brother positively affect lung cancer through smoking?
yes.