Adjusting result set in SPARQL (extracting part from URI)

Question

I am beginner in SPARQL, and I want to make query on DBpedia to use the result then in Java-Programm as a JSON file . I use this simple SPARQL query on http://dbpedia.org/snorql or https://dbpedia.org/sparql

PREFIX owl: <http://www.w3.org/2002/07/owl#>    
PREFIX : <http://dbpedia.org/resource/>

SELECT ?a    
WHERE {    
 :Berlin owl:sameAs ?a .    
}

And I get this result, but I want to extract these words, which are highlighted in yellow, and exclude everything else. Is it doable, or should I continue this part in Java?