About: http://webisa.webdatacommons.org/15200319

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 patented technology is based on a machine-learning approach, in which customers submit examples of e-mail that they consider spam, which are used to train the filter.
http://www.w3.org/ns/prov#wasQuotedFrom	microsoft.com