About: http://webisa.webdatacommons.org/421416545

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	It looks like Microsoft are picking up on the trend for people to write their own add-on apps (in this case called Activities) which are well used in applications such as LinkedIn, Facebook and salesforce.com.
http://www.w3.org/ns/prov#wasQuotedFrom	wordpress.com