human
Find roads that have geometry and addresses (if any).
gpt
```sparql
PREFIX :    <http://example.org/ontology#>
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>

SELECT ?road ?geom ?addr
WHERE {
  ?road rdf:type :Road ;
        :hasGeometry ?geom .
  OPTIONAL {
    ?road :hasAddress ?addr .
  }
}
```