q-opt2.rq

来自「Jena推理机」· RQ 代码 · 共 10 行

# Optional example
PREFIX info:        <http://somewhere/peopleInfo#>
PREFIX vcard:      <http://www.w3.org/2001/vcard-rdf/3.0#>

SELECT ?name ?age
WHERE 
{
    ?person vcard:FN  ?name .
    ?person info:age ?age .
}