PREFIX dbo: <http://dbpedia.org/ontology/>
PREFIX prop: <http://dbpedia.org/property/>

SELECT ?city
WHERE {
?city prop:name "X"@en;
a dbo:PopulatedPlace
}

<rdf:RDF><rdf:Description rdf:nodeID="rset"><rdf:type rdf:resource="http://www.w3.org/2005/sparql-results#ResultSet"/><res:resultVariable>city</res:resultVariable><res:solution rdf:nodeID="r0"><res:binding rdf:nodeID="r0c0"><res:variable>city</res:variable><res:value rdf:resource="http://dbpedia.org/resource/Antwerp"/></res:binding></res:solution></rdf:Description></rdf:RDF>

SELECT ?city ?property ?value
WHERE {
    ?city prop:name "X"@en;
          a dbo:PopulatedPlace;
          ?property ?value .
}

SELECT *
WHERE {
    ?city prop:name "Galway"@en;
          a dbo:PopulatedPlace .
    OPTIONAL { ?city dbo:populationUrban ?pop }
    OPTIONAL { ?city foaf:homepage ?homepage }
    OPTIONAL { ?city geo:lat ?lat }
    OPTIONAL { ?city geo:long ?long }
}

PREFIX dbo: <http://dbpedia.org/ontology/>
PREFIX prop: <http://dbpedia.org/property/>
PREFIX geo: <http://www.w3.org/2003/01/geo/wgs84_pos/>

SELECT ?city, ?latitude, ?longitude
WHERE {
?city prop:name "Edinburgh"@en;
    a dbo:PopulatedPlace;
    geo:lat ?lat;
    geo:long ?long.
    bind(strafter(str(?lat), "http://www.w3.org/2003/01/geo/wgs84_pos/") as ?latitude)
    bind(strafter(str(?lat), "http://www.w3.org/2003/01/geo/wgs84_pos/") as ?longitude)
}