diff --git a/research.mdwn b/research.mdwn
index 7d1bc8b47a1fac8b77052f75c5b93b0e4f93efbb..1fc938e0ff7c371d18098bc8a3206f717d8fe7ba 100644
--- a/research.mdwn
+++ b/research.mdwn
@@ -9,6 +9,7 @@
 
 ## Unsorted local stash
 
+* [Wikidata](https://www.wikidata.org).
 * OsmAnd and GPX tracks.
 * [Swagger Specification](http://swagger.io/specification/).
 * https://wpull.readthedocs.io/en/master/usage.html