Question: How many bacterias have taxonomy as Bacillales and domain as Bacteria? 
SPARQL:
 SELECT DISTINCT COUNT(?uri) WHERE {?uri <http://dbpedia.org/ontology/order> <http://dbpedia.org/resource/Bacillales> . ?uri <http://dbpedia.org/property/domain> <http://dbpedia.org/resource/Bacteria> }