query: # Count of P69 'educated at' grouped by educational establishment, for  
  #'Wikidata entries for Ghanaian MPs in thre 7th Parliament of the 4th Republic
  
   select ?educatedLabel (count(distinct ?person) as ?count)
     where {
      ?person p:P39 ?positionStatement . ?positionStatement ps:P39 wd:Q61659845 . 
     ?person wdt:P69 ?educated . # where were they educated
    SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en". }
     } group by ?educatedLabel
  #defaultView:BubbleChart