About: http://webisa.webdatacommons.org/212608911

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	+ ## Octave doesn't have difftime, so assume that time is an arithmetic
http://www.w3.org/ns/prov#wasQuotedFrom	sourceforge.net