Project(Extend(Extend(Extend(BGP( ?pid ^<http://www.example.com/datam/op/isOfferOf> ?oid .
                                  ?oid <http://www.example.com/datam/dp/condition> ?cond .
                                  ?oid <http://www.example.com/datam/dp/price> ?pr),
                             ?condition,
                             if((?cond = 1), "New", "Used") ),
                      ?total,
                      count(?cond) ),
               ?priceMin,
               min(?pr) ),
        {?total, ?priceMin, ?condition})