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http://webisa.webdatacommons.org/216123341
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http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value
The number of reported spills (oil, chemical and other pollutants) has increased from an average of 116 from 1982 to 1986, to 246 from 1987 to 1991; only 2 percent of those spills were classified as major (more than 1,000 gallons).
http://www.w3.org/ns/prov#wasQuotedFrom
minneapolisfed.org