About: http://webisa.webdatacommons.org/334144368

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	Me represents a mono- or divalent metal (preferably an alkali metal or alkaline earth metal such as lithium, sodium, potassium, magnesium or calcium),
http://www.w3.org/ns/prov#wasQuotedFrom	google.com