About: http://webisa.webdatacommons.org/208453902

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 effect of darkness is to reduce a runner???s pace by about 20%, but this average figure hides a considerable variability caused by such factors as terrain and degree of darkness.
http://www.w3.org/ns/prov#wasQuotedFrom	wordpress.com