prefix bsbm: <http://www4.wiwiss.fu-berlin.de/bizer/bsbm/v01/vocabulary/>
  prefix bsbm-inst: <http://www4.wiwiss.fu-berlin.de/bizer/bsbm/v01/instances/>
  prefix xsd: <http://www.w3.org/2001/XMLSchema#>

  Select ?product
  {
    { Select ?product
      { 
        { Select ?product (count(?offer) As ?offerCount)
          { 
            ?product a %ProductType% .
            ?offer bsbm:product ?product .
          }
          Group By ?product
        }
      }
      Order By desc(?offerCount)
      Limit 1000
    }
    FILTER NOT EXISTS
    {
      ?offer bsbm:product ?product .
      ?offer bsbm:vendor ?vendor .
      ?vendor bsbm:country ?country .
      FILTER(?country=%Country%)
    }
  }