About: http://webisa.webdatacommons.org/16819741

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 case of echo, it calls an output function such as printf, which in turn uses the kernel's services to print characters on the screen.
http://www.w3.org/ns/prov#wasQuotedFrom	ozzu.com