About: http://webisa.webdatacommons.org/196766482

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	wherein X is a suitable leaving group and M is selected from the group consisting of H and an ion of a naturally occurring metal having an atomic number less than 80.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com