About: http://webisa.webdatacommons.org/374843638

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	Limestone is much harder than chalk and very bright limestone deposits are found in such places as Alabama, Vermont, and British Columbia.
http://www.w3.org/ns/prov#wasQuotedFrom	ncsu.edu