About: http://webisa.webdatacommons.org/13237202

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	As well as using opacity to create 'realistic' strokes, you can also go to the transparency palette and then set the strokes to different blending modes such as darken or difference to create even more stroke works.
http://www.w3.org/ns/prov#wasQuotedFrom	graphicxtras.com