About: http://webisa.webdatacommons.org/122056414

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 a GP programming language, which all toolkits are based on, an undefined symbol is an error.
http://www.w3.org/ns/prov#wasQuotedFrom	osnews.com