About: http://webisa.webdatacommons.org/139621403

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	JNG support; non-redistributable freeware (requires free registration, cookies, JavaScript) with source. (This is a utility to display file contents [e.g., in hexadecimal] and print useful information [e.g., image dimensions].)
http://www.w3.org/ns/prov#wasQuotedFrom	libpng.org