About: http://webisa.webdatacommons.org/322607606

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 centroid is illustrated by a line including an X located at the point between the left and right cursor lines which is the middle point with respect to the area under the graph.
http://www.w3.org/ns/prov#wasQuotedFrom	google.co.uk