Question: Count the  total number of mammals whose phylum is Chordate and order (taxonomy) is Diprotodontia?
SPARQL query:
PREFIX onto: <http://dbpedia.org/ontology/>
 SELECT DISTINCT COUNT(?uri) WHERE {?uri onto:phylum <http://dbpedia.org/resource/Chordate> . ?uri onto:order <http://dbpedia.org/resource/Diprotodontia> }