About: http://webisa.webdatacommons.org/26326608

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	OR in SharePoint 2013 create a custom error page, add a content editor webpart to it, and some javscript code which will create a subsite for you, but there is a lot of things that you will require to set e.g. subsite name, url etc...
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com