Example DBPedia enrichment of population

example.sparql

PREFIX dbo: <http://dbpedia.org/ontology/>
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
PREFIX dbp: <http://dbpedia.org/property/>
prefix : <http://ejemplo.org/>

SELECT ?name ?population ?v1 ?v2 WHERE {
 SERVICE <http://dbpedia.org/sparql> {
  SELECT ?name ?population WHERE {
    ?c rdf:type dbo:Country .
    ?c dbp:populationEstimate ?population .
    ?c rdfs:label ?name .
    FILTER (lang(?name)='en')
  }
 }
 ?country :name ?name .
 ?x :indicator :Woman ; :value ?v1 ; :country ?country . 
 ?y :indicator :Man ; :value ?v2 ; :country ?country . 
}