Assertion: unit's definition | /r/CapableOf | take effect
Facets:
value: in 1959
type: TEMPORAL
value: in the united states
type: LOCATION
Source sentences:
text: New definitions of the base units were approved on 16 November 2018, and took effect 20 May 2019.
text: In the United States the definition of the foot as exactly 30.48 cm took effect in 1959.