About: http://webisa.webdatacommons.org/72733237

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	The ring-closing moiety, Z, is preferably --O--, --S--, --NH-- or --CH2 --, and in some embodiments is a bivalent moiety containing carbon, sulfur or nitrogen.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com