About: http://webisa.webdatacommons.org/324407876

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	Invisible ink might require a ???spell??? of its own in order to be rendered visible, such as applying heat or a particular chemical to the paper to make the ink appear.
http://www.w3.org/ns/prov#wasQuotedFrom	patheos.com