Assertion: tonne | /r/HasProperty | non-si metric unit of mass
Facets:
Source sentences:
text: The tonne ( or ; symbol: t) is a non-SI metric unit of mass equal to 1,000 kilograms.
text: A metric ton generally denoted to the United States and Canada is a non-SI metric unit of mass up to 1,000 or one mega-grams.