Assertion: archipelago's island | /r/CapableOf | sink in 1970
Facets:
value: at a rate
type: MANNER
value: slowly
type: MANNER
value: for several reasons
type: CAUSE
Source sentences:
text: For several reasons—including a gradual rise of the sea’s level, local subsidence of the Earth’s crust, diversion of nearby river mouths (depriving the islands of additional alluvium buildup), excess drainage of groundwater, and the construction of additional and heavier buildings—the islands were slowly sinking in the 1970s at a rate estimated at 1.2 inches (3 cm) every 10 years.