About: http://webisa.webdatacommons.org/195681237

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 thing is that I would like to display them ONLY when they are OVER the background, and not always like now ??? i.e. clip the image with a kind of Mask Layer ???
http://www.w3.org/ns/prov#wasQuotedFrom	css-tricks.com