About: http://webisa.webdatacommons.org/423790650

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	when R18 is a halogen or primary carbon group none, one or two of R21, R22 and R25 are a halogen or a primary carbon group, with the remainder of R21 R22 and R25 being hydrogen; or
http://www.w3.org/ns/prov#wasQuotedFrom	google.es