About: http://webisa.webdatacommons.org/60951127

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	Scientists and other observers worked hard to track the rise and fall of the lake as accurately as possible, so that the volumes of lava erupting and draining back into the vent could be calculated.
http://www.w3.org/ns/prov#wasQuotedFrom	usgs.gov