Add descriptions to Wikidata items
- SPARQL query: a SPARQL SELECT query which can be executed on https://query.wikidata.org. Needs to return ?item as the item number.
- Language code: a valid language code used on Wikidata
- Description: a Wikidata description which will be added to all items returned by the SPARQL query. Can include variables returned by the SPARQL query, e.g. movie by ?director.