It's also fun doing this on Wikidata with "subclass of". * Go to a Wikidata item, e.g. "sailboat" [1] * Click on the "subclass of" (P279) value or, if no such

It's also fun doing this on Wikidata with "subclass of". * Go to a Wikidata item, e.g. "sailboat" [1] * Click on the "subclass of" (P279) value or, if no such value exists, the "instance of" (P31) value * Follow the "subclass of" chain up to "entity" [2] You can do the reverse -- i.e. go down the classification tree -- with tools like Wikidata Generic Tree [3]. --- 1. https://www.wikidata.org/wiki/Q1075310 https://www.wikidata.org/wiki/Q1075310 2. https://www.wikidata.org/wiki/Q35120 https://www.wikidata.org/wiki/Q35120 3. http://tools.wmflabs.org/wikidata-todo/tree.html?q=Q35120&rp=279&depth=2&lang=en http://tools.wmflabs.org/wikidata-todo/tree.html?q=Q35120&rp...