About: http://webisa.webdatacommons.org/394139922

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	In most of the previous arts, the watermark is a symbol or a random number comprising a sequence of bits, which are visually unidentifiable.
http://www.w3.org/ns/prov#wasQuotedFrom	google.fr