Assertion: abacus | /r/ObjectUse | used in japan
Facets:
value: widely
type: DEGREE
value: as a visual aid
type: PURPOSE
value: by clerks
type: OTHER
value: by merchants
type: OTHER
Source sentences:
text: In China, Japan, Russia, and Africa, the abacus is still widely used by merchants and clerks.
text: It is still widely used today in Africa, Japan, Russia, China and other countries as a visual aid to facilitate the learning of mathematical concepts.