With no explanation, label text_A→text_B with either "no" or "yes".
text_A: For patients who are young and pay a low hospital bill, the probability of thick lips is 91%. For patients who are young and pay a high hospital bill, the probability of thick lips is 68%. For patients who are old and pay a low hospital bill, the probability of thick lips is 21%. For patients who are old and pay a high hospital bill, the probability of thick lips is 9%. The overall probability of old age is 49%.
text_B: Will high hospital bill decrease the chance of thick lips?
yes.