About: http://webisa.webdatacommons.org/149390933

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	In the past several years, email systems have changed to be more highly integrated with new forms of communication and personal productivity tools including instant messaging, social media, file storage, and collaboration.
http://www.w3.org/ns/prov#wasQuotedFrom	calvin.edu