About: http://webisa.webdatacommons.org/227523232

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	that together form a cyclic acetal or ketal; and R5 is a hydrogen atom, alkoxyl, alkyl, halo, aryl, or alkenyl group.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com