About: http://webisa.webdatacommons.org/260104198

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	in which M1 is as defined in the formula I, and X is a halogen atom, preferably chlorine, or
http://www.w3.org/ns/prov#wasQuotedFrom	google.com