About: http://webisa.webdatacommons.org/253470236

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	Netherworld Knowledge is a Mage or Priest proficiency, that is to say it costs one slot for clerics and wizards, and those with access to such things, such as bards and paladins.
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.com