Assertion: chlorofluorocarbon's emission | /r/HasProperty | measured
Facets:
value: according to production
type: OTHER
value: usually
type: DEGREE
value: between the years
type: TEMPORAL
Source sentences:
text: Cumulative emissions include land use change, and are measured between the years 1950 and 2000.
text: Emissions are usually measured according to production, rather than consumption.