Assertion: ounce | /r/CapableOf | adopt as official weight standard
Facets:
value: on may
type: TEMPORAL
value: for united states
type: LOCATION
Source sentences:
text: The troy ounce in use today is essentially the same as the British Imperial troy ounce (1824–1971), adopted as an official weight standard for United States coinage by Act of Congress on May 19, 1828.