Question: What was the last movie with Alec Guinness?
SPARQL:
PREFIX dbo: <http://dbpedia.org/ontology/>
PREFIX res: <http://dbpedia.org/resource/>
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
SELECT DISTINCT ?uri
WHERE {
        ?uri rdf:type dbo:Film . 
        ?uri dbo:starring res:Alec_Guinness .
        ?uri dbo:releaseDate ?date . 
} 
ORDER BY DESC(?date) 
LIMIT 1