About: http://webisa.webdatacommons.org/449106539

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	Calcium is an essential component shells, bones, teeth and plant structures.
http://www.w3.org/ns/prov#wasQuotedFrom	crosswords911.com