About: http://webisa.webdatacommons.org/32224002

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	Second, your error message is not based on any validation of the file extension but rather the validation of whether the e-mail was sent or not.
http://www.w3.org/ns/prov#wasQuotedFrom	sitepoint.com