Assertion: plow | /r/HasAspect | room
Facets:
value: certainly
type: MANNER
value: for improvement
type: OTHER
Source sentences:
text: While historians aren't entirely certain of where the plow originated, evidence suggests that the Egyptians and Sumerians were among the first societies to employ its use around 4000 B.C. [source: Pryor]. Those plows certainly had room for improvement.