About: http://webisa.webdatacommons.org/41846897

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	Assert is a macro, not a function, because it prints the literal expr as part of its output, making it easy in a long sequence of assertions to know which is in error.
http://www.w3.org/ns/prov#wasQuotedFrom	programmingpraxis.com