About: http://webisa.webdatacommons.org/429713545

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	A caldera is a feature that forms by the collapse of land after a volcanic eruption.
http://www.w3.org/ns/prov#wasQuotedFrom	arizona.edu