About: http://webisa.webdatacommons.org/171200394

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 Y is a halogen atom, specific examples include a fluorine atom, a chlorine atom, a bromine atom and an iodine atom, and a chlorine atom is preferable.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com