syntax-forms-arq-06.arq

Jena推理机

PREFIX : <http://example.org/ns#>
SELECT *
WHERE
{
  [] << (?s) [ :pp :qq ] << :s :p :o >> >> .
  ( [ :p () ] ) . 
  ( [ :p << ?s ?p ?o >> ] ) .  # reification-as-object
  { ( [ << ?s ?p ?o >> ] ) } .
  { ( [ << [:p :q ] << 1 2 3 >> [a [] ] >> ] ) } .
}