About: http://webisa.webdatacommons.org/167011809

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	There are a number of actual and fictional examples of items or messages having been concealed in a book.[citation needed]
http://www.w3.org/ns/prov#wasQuotedFrom	wikipedia.org