query: SELECT ?item ?itemLabel ?countryLabel WHERE {
    ?item wdt:P31 wd:Q4022 ;
          rdfs:label ?itemLabel;
    OPTIONAL { ?item wdt:P17 ?country . ?country rdfs:label ?countryLabel . FILTER (lang(?countryLabel) = "fr") }
    FILTER (lang(?itemLabel) = "es") .
    FILTER regex (?itemLabel, "^Guad") .
  }
  ORDER BY ?itemLabel ?countryLabel