Das sollte laut W3C Rec so funktionieren:
Daten:
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
_:a foaf:name "Alice" .
_:b foaf:name "Bob" .
Query:
PREFIX foaf: <http://xmlns.com/foaf/0.1/>
SELECT ?x ?name
WHERE { ?x foaf:name ?name }
Ergebnis:
x name
_:c "Alice"
_:d "Bob"
Aufpassen:
An application writer should not expect blank node labels in a query to refer to a particular blank node in the data.
