Question: What nation is the motherland of Ricardo Alfonso Cerna  where Apostolic Vicariate of El Petn is located?
SPARQL query:
PREFIX res: <http://dbpedia.org/resource/>
PREFIX prop: <http://dbpedia.org/property/>
PREFIX onto: <http://dbpedia.org/ontology/>
SELECT DISTINCT ?uri WHERE { res:Ricardo_Alfonso_Cerna prop:birthPlace ?uri. res:Apostolic_Vicariate_of_El_Petén onto:country ?uri . }