human
349) Show roads that have geometry referencing 'SIGN' or 'SYMBOL' in WKT (extreme case).
gpt
```sparql
PREFIX geo:<http://www.opengis.net/ont/geosparql#>
PREFIX :   <http://example.org/ontology#>

SELECT ?r
WHERE {
  ?r a :Road ;
     :hasGeometry ?g .
  ?g geo:asWKT ?wkt .
  FILTER regex(?wkt, "(SIGN|SYMBOL)", "i")
}
```