Assertion: ocean's extent | /r/CapableOf | decrease in last decades
Facets:
value: continuously
type: TEMPORAL
Source sentences:
text: The mean extent of the Arctic sea ice has been continuously decreasing in the last decades, declining at a rate of currently 12.85% per decade since 1980 from the average winter value of 15,600,000 km2 (6,023,200 sq mi).