About: http://webisa.webdatacommons.org/440061570

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	The term ???alkaline earth metal??? is used herein in the conventional sense, and refers to metals of Group IIa of the periodic table, including magnesium (Mg), calcium (Ca), strontium (Sr), and barium (Ba).
http://www.w3.org/ns/prov#wasQuotedFrom	google.com