About: http://webisa.webdatacommons.org/251404680

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	Classic Russian maps show rock age, whereas North American convention is to also show their composition such as limestone or sandstone, St-Onge explained.
http://www.w3.org/ns/prov#wasQuotedFrom	phys.org