SQUALL to SPARQL Translator

Your SQUALL sentence:

Who is the dbp:author of the anthem of res:Poland?

SELECT DISTINCT ?x1 WHERE {

res:Poland :anthem ?x2 .
?x2 dbp:author ?x1 .

}

Run at DBpedia SPARQL endpoint (assuming prefixes res: for resources, : and dbo: for ontology, and dbp: for properties in addition to DBpedia namespace definitions).

Load in DBpedia SPARQL Explorer (assuming the same prefixes as above).