About: http://webisa.webdatacommons.org/425064673

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	Preferably, one, two or three radicals from the group Rb, Rc, Rd have, independently of one another, a meaning of the formula Ia, and any other radicals from the group Rb, Rc, Rd denote H.
http://www.w3.org/ns/prov#wasQuotedFrom	freshpatents.com