About: http://webisa.webdatacommons.org/14020671

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	The zone may be impregnated with a fifth reagent which may be a material such as copper sulfate which will indicate the presence of solvent.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com