| http://www.w3.org/ns/prov#value | - en or so pollutants taken at a small number of airborne and land-based fixed and mobile monitors, the EPA consistently said during the first seven weeks of the Deepwater Horizon disaster there was no serious health threat, although the agency acknowledged there could be a pronounced smell similar to that of a gas station and that short-term problems such as headaches and nausea were possible.22Rel
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