[Value] The language for the query engine is based on RQL (from ICS-FORTH), which offers full support for querying both plain RDF and RDF Schema. Our RQL implementation is slightly different than ICS-FORTH's because our interpretation of RDF Schema differs from theirs and because Sesame is less restrictive on the (RDF Schema-) ontologies that can be used. Our query engine does not support all features of RQL yet. [Property] 
query
a u t h o r
i n t r o d u c t i o n
i m p l e m e n t a t i o n
q u e r y
i n f e r e n c e
s c a l a b i l i t y
p e r f o r m a n c e
p l a t f o r m
s e e a l s o
l a s t u p d a t e