With no explanation, label text_A→text_B with either "no" or "yes".
text_A: For students who cannot swim and do not study hard, the probability of high exam score is 25%. For students who cannot swim and study hard, the probability of high exam score is 50%. For students who can swim and do not study hard, the probability of high exam score is 49%. For students who can swim and study hard, the probability of high exam score is 77%. For students who cannot swim, the probability of studying hard is 24%. For students who can swim, the probability of studying hard is 72%.
text_B: Does ability to swim positively affect exam score through studying habit?
yes.