Question: Which successor of McDonnell Douglas was built by Delta 3 ?
SPARQL query: SELECT DISTINCT ?uri WHERE { <http://dbpedia.org/resource/Delta_III> <http://dbpedia.org/ontology/manufacturer> ?uri. <http://dbpedia.org/resource/McDonnell_Douglas> <http://dbpedia.org/property/successor> ?uri}
Answer: [Boeing] is built by Delta III and successor of McDonnell Douglas.