About: http://webisa.webdatacommons.org/443002445

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	Examples of such metals are sodium, lithium, potassium, rubidium, cesium, beryllium, magnesium, calcium, strontium and barium, of which sodium and potassium are preferred in view of flame retardancy.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com