vc-q4

jena2.5.4推理机系统的一种最基本实现 HP实验室出品

SELECT ?resource, ?givenName
WHERE (?resource, <http://www.w3.org/2001/vcard-rdf/3.0#N>, ?z) ,
      (?z, <http://www.w3.org/2001/vcard-rdf/3.0#Given>, ?givenName)