About: http://webisa.webdatacommons.org/77557620

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 carbonate, CaCO3, is a common substance found in all parts of the world, and is the main component of shells of marine organisms, snails, pearls, marble and eggshells.
http://www.w3.org/ns/prov#wasQuotedFrom	safelawns.org