Assertion: tonne | /r/CapableOf | date the introduction of the si
Facets:
value: in 1960
type: TEMPORAL
Source sentences:
text: The spelling tonne pre-dates the introduction of the SI in 1960; it has been used with this meaning in France since 1842, when there were no metric prefixes for multiples of 106 and above, and is now used as the standard spelling for the metric mass measurement in most English-speaking countries.