Question: What are the mammals whose phylum is Chordate?
SPARQL:
SELECT DISTINCT ?uri WHERE {?uri <http://dbpedia.org/ontology/phylum> <http://dbpedia.org/resource/Chordate>  . ?uri <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/Mammal>}