query: #all taxons with proteins that are subclass of a protein family
  SELECT ?class ?classLabel ?count ?use_as_Label
  {	{	SELECT ?class (COUNT(*) AS ?count) (wd:P703 as ?use_as_)
  		{ ?protein wdt:P352 ?up .
            ?protein wdt:P279 ?a .	
            ?a	wdt:P31	wd:Q417841 .
            ?protein    wdt:P703	?class}
          GROUP BY ?class ORDER BY DESC(?count)
    	}
    	SERVICE wikibase:label { bd:serviceParam wikibase:language "en,en" }
  }
  ORDER BY DESC(?count) ?class