Only for the selected countries

Author: egonw

scholia/app/templates/countries_list-of-countries.sparql

@@ -1,16 +1,12 @@
 {% import 'sparql-helpers.sparql' as sparql_helpers -%}
-PREFIX bd: <http://www.bigdata.com/rdf#>
+PREFIX wd: <http://www.wikidata.org/entity/>
 PREFIX wdt: <http://www.wikidata.org/prop/direct/>
-PREFIX wikibase: <http://wikiba.se/ontology#>
 SELECT ?number_of_publications ?country ?countryLabel ?example_author ?example_authorLabel ?example_work ?example_workLabel WHERE {
   {
     SELECT ?country (COUNT(DISTINCT ?work) AS ?number_of_publications) (SAMPLE(?work) AS ?example_work) (SAMPLE(?author) AS ?example_author) WHERE {
-      {
-        SELECT ?country WHERE {
-          #    VALUES ?country { {% for q in qs %} wd:{{ q }} {% endfor %} }
-        }
-      }
+      VALUES ?country { {% for q in qs %} wd:{{ q }} {% endfor %} }
       OPTIONAL {
+        VALUES ?country { {% for q in qs %} wd:{{ q }} {% endfor %} }
         ?organization wdt:P17 ?country .
         ?author wdt:P108 | wdt:P463 | wdt:P1416/wdt:P361* ?organization .
         ?work wdt:P50 ?author .