About: http://webisa.webdatacommons.org/55016835

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	PHP has some problems that can cause this kind of behaviour, in this case the problem comes from the fact that you are using different types on your Switch.
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com