About: http://webisa.webdatacommons.org/31521278

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 should not the PizzaOrderPk class actually be defined as an Entity like other classes?
http://www.w3.org/ns/prov#wasQuotedFrom	spring.io