About: http://webisa.webdatacommons.org/427975594

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	I can estimate the variance quite well with one sample, because each sample is a sample of a GPS-position (with a position, and an error-value which is the standard deviation of the measurement).
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com