About: http://webisa.webdatacommons.org/393389930

Property	Value
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	December 12, 2013 at 8:00 am I???ve pointed this out before ??? and maybe others have too ??? ozone is an unstable substance with a half life dependent on the temperature: at -30 degrees C the half life is 3 months.
http://www.w3.org/ns/prov#wasQuotedFrom	wattsupwiththat.com