About: http://webisa.webdatacommons.org/51428156

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 decision whether to send a challenge may be based on statistical factors, such as deciding to challenge requests for example 95% of the time.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com