PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Use is_array() to check to make sure a variable is an array before you try to use it in a foreach().
http://www.w3.org/ns/prov#wasQuotedFrom
  • codingforums.com