| http://www.w3.org/ns/prov#value | - Two days later, the rig sank.One year on, oil from the largest spill in U.S. history clogs wetlands, pollutes the ocean and endangers wildlife, not to mention the toll it has inflicted on the coastal economies of Florida, Mississippi, Alabama and especially Louisiana.It was the biggest ever accidental release of oil into an ocean.Even so, environmental damage from the ruptured well that spewed mor
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