Assertion: crude oil | /r/HasProperty | collected
Facets:
value: from water
type: OTHER
value: by using skimmers
type: MANNER
value: from seeps
type: LOCATION
Source sentences:
text: When Marco Polo in 1264 visited Baku, on the shores of the Caspian Sea, he saw oil being collected from seeps.
text: The total estimated volume of leaked oil approximated 4.9 million barrels (210 million US gal; 780,000 m3) with plus or minus 10% uncertainty, including oil that was collected, making it the world's largest accidental spill.
text: Oil was collected from water by using skimmers.