Assertion: mortar | /r/MadeOf | clay
Facets:
value: originally
type: OTHER
Source sentences:
text: The first mortars were made of mud and clay, as demonstrated in the 10th millennia BCE buildings of Jericho, and the 8th millennia BCE of Ganj Dareh.
text: The first mortars were made of mud and clay.
text: Mortar was originally made of mud or clay.