Use Overpass CSV instead to check each item

[ppKrauss]

As the prove of concept at help.openstreetmap shows, is possible to generate an OSM's dump with all elements with a Wikidata tag.

Ideal is by relation mask, for each country or each country's states.

[out:csv(::type,::id,wikidata,name)] ;
relation   (_MASK_RELATION_ID_) -> .c ;
.c map_to_area -> .myarea ;
(
  node (area.myarea) [wikidata];
  way (area.myarea) [wikidata];
  relation (area.myarea) [wikidata];
);
out meta ;

[ppKrauss]

Important NOTICE from @mmd-osm, is to not run "with all planet". Important to stay with the 2018's goal that is AR, BR, GW and perhaps (if possible), DE.