Assertion: abacus | /r/HasProperty | old tool
Facets:
value: very
type: DEGREE
Source sentences:
text: An abacus is a very old tool used for math.
text: Abacus can also be called as the oldest computer.
text: While there are a number of tools that have been developed to aid in the practice of mathematics and computation, the abacus may be one of the oldest.
text: An abacus is a very old tool used for math.
text: Abacus can also be called as the oldest computer.