With no explanation, label text_A→text_B with either "DON'T KNOW", "NO" or "YES".
text_A: Pottery making began in the 7th millennium BC. The earliest forms of pottery have been found at the Hassuna site and were pots formed by hand from slabs of reddish-brown clay that were low-fired and lacking in glazing or decoration. Within the next millennium, wares were decorated with elaborate painted designs and natural forms, incising and burnished.
text_B: Given what we know about pottery making in the 7th millenium B.C. if archeologists found evidence from the same time period that showed mixing of ash and sand, or similar compounds, would the reasonable assumption be that such mixtures had another purpose, unrelated to pottery making?
YES.