human
Find roads that do not have geometry.
gpt
```sparql
PREFIX :     <http://example.org/ontology#>
PREFIX rdf:  <http://www.w3.org/1999/02/22-rdf-syntax-ns#>

SELECT ?road
WHERE {
  ?road rdf:type :Road .
  FILTER NOT EXISTS {
    ?road :hasGeometry ?geom .
  }
}
```