About: http://webisa.webdatacommons.org/362041208

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	The numerical component of the observation is obtained by measurement, i.e. comparing the observation to some standard even if the comparison is an estimate.
http://www.w3.org/ns/prov#wasQuotedFrom	ck12.org