PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Apparently there were other factors, including volcanic eruptions and an unusually weak jet stream (which is affected by ozone production in the Earth???s upper atmosphere, which in turn was lowered due to lower solar activity!), amplifying this effect.
http://www.w3.org/ns/prov#wasQuotedFrom
  • discovermagazine.com