About: http://webisa.webdatacommons.org/241217441

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	April 1st, 2008 was a Tuesday, so no xkcd comic would have normally come out then.
http://www.w3.org/ns/prov#wasQuotedFrom	explainxkcd.com