About: http://webisa.webdatacommons.org/217357150

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	I once mentioned on my blog how this is a complete secret within the letterpress printers but there are suggestions etc but nobody really says how they do it.Here is an interesting article about the whole thing.
http://www.w3.org/ns/prov#wasQuotedFrom	loudbang.co.uk