Assertion: oil spill | /r/CapableOf | plummet in the 1970s
Facets:
value: to six per year
type: TEMPORAL
value: over the past decade
type: TEMPORAL
Source sentences:
text: Combined with tougher regulations and better navigation equipment, oil spills releasing more than seven tons from tankers plummeted from a high of 79 spills per year in the 1970s to six per year over the past decade, according to ITOPF, an association of shipowners that responds to oil spills.