human
Find the building(s) with addresses on 'Main Street' and 'High Street' simultaneously (if any).
gpt
```sparql
PREFIX :     <http://example.org/ontology#>
PREFIX rdf:  <http://www.w3.org/1999/02/22-rdf-syntax-ns#>

SELECT ?building
WHERE {
  ?building rdf:type :Building .
  ?building :hasAddress ?addr1 , ?addr2 .
  ?addr1 :hasStreetName "Main Street" .
  ?addr2 :hasStreetName "High Street" .
}
```