About: http://webisa.webdatacommons.org/422589241

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	The exception, in my case, is a bug, I do not have any logic around an NPE. I just find it strange that throwing that exception seems to generate a required validation message...
http://www.w3.org/ns/prov#wasQuotedFrom	spring.io