About: http://webisa.webdatacommons.org/237753786

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	Recall that a monoid is an algebraic structure having an associative operation ++, and an identity for ++ called []. (That is [] ++ x = x = x ++ [].)
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.com