About: http://webisa.webdatacommons.org/452990611

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 R is a halogen atom, x may be between 1 and 5, otherwise, x may be between 1 and 3.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com