Question: What is the name of the characters created by Frank Miller?
SPARQL query: SELECT DISTINCT ?uri WHERE { ?x <http://dbpedia.org/property/creators> <http://dbpedia.org/resource/Frank_Miller_(comics)> . ?x <http://dbpedia.org/property/characterName> ?uri  . ?x <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/FictionalCharacter>}
Answer: The names of the fictional characters created by Frank Miller are [answer].