With no explanation, label text_A→text_B with either "DON'T KNOW", "NO" or "YES".
text_A: In Russia, Ukraine and other former Soviet states, a very similar product is called "doktorskaya kolbasa" (, lit. "doctor's sausage"). However, this product is normally made from a mixture of beef and pork (sometimes beef and lamb or chicken for religious reasons), and does not include pieces of fat or myrtle; mortadella-style sausages with pieces of fat are called "lubitelskaya" and "stolichnaya". Instead, it is flavoured with just cardamom, sometimes coriander and nutmeg, and also traditionally contains eggs and milk, which are usually absent in traditional mortadella. Unlike mortadella, "doktorskaya kolbasa" contains lower amounts of fat and is high in proteins.
text_B: Given the differences or similarities between mortadella and doctor's sausage, is it reasonable to assume that, on average, the difference in the amount of fat comes from dairy products rather than from fat in the meat?
NO.