About: http://webisa.webdatacommons.org/25001490

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	So, each column is a month, and in each column there are the emails of who opened the email?
http://www.w3.org/ns/prov#wasQuotedFrom	superuser.com