This template fetches an identifier property from Wikidata and formats it as a URL. Use as for example:

{{Wikidata ID line|P3634|qid=Q19905080}}

which returns:

: 437882

If you want to hide the ID, then use:

{{Wikidata ID line|P3634|qid=Q19905080|showid=no}}

which returns:

[1]

Use with {{Wikidata ID}} to return multiple IDs at once.