PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Sulphate causes respiratory disease and is particularly problematic for the young, the elderly and people with asthma. areas a result acceptable levels of sulphate in the air are strictly controlled in many countries including the US.
http://www.w3.org/ns/prov#wasQuotedFrom
  • newscientist.com