query: embed.html##Number of out of school children for all countries, continents and geographic regions since 1999
  SELECT ?country ?countryLabel ?number_of_out_of_school_chidren ?date ?methodLabel
  WHERE {
    
    ?country p:P2573 ?out_of_school_chidren .
    ?out_of_school_chidren ps:P2573 ?number_of_out_of_school_chidren .
    ?out_of_school_chidren pq:P585 ?date .
    ?out_of_school_chidren pq:P459 ?method .
    
    SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en". }
    
  } 
  
  ORDER BY ?countryLabel ?date