About: http://webisa.webdatacommons.org/209396100

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	you link pngcrush with zlib-1.1.3 and a version of libpng such as any 1.0.x
http://www.w3.org/ns/prov#wasQuotedFrom	sourceforge.net