About: http://webisa.webdatacommons.org/76899893

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	which they are both attached forms a heterocyclic group; and r is a number greater than or equal to 2.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com