Question: What is the mountain whose parent mountain peak is Nevado de Toluca?
SPARQL:
SELECT DISTINCT ?uri WHERE {?uri <http://dbpedia.org/ontology/parentMountainPeak> <http://dbpedia.org/resource/Nevado_de_Toluca>  . ?uri <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/Mountain>}