Assertion: coal mine's output | /r/CapableOf | reach 16 million long tons
Facets:
value: by 1815
type: TEMPORAL
Source sentences:
text: After 1790 output soared, reaching 16 million long tons by 1815 at the height of the Napoleonic War.
text: After 1790 output soared, reaching 16 million long tons by 1815.