Project(Extend(Extend(Project(Extend(Extend(Extend(Extend(Extend(AggregationJoin(Aggregation(??agg1: ?pid, SAMPLE,
                                                                                 {},
                                                                                 G1=Group((?pid),
                                                                                    Join(Project(Extend(Extend(Extend(AggregationJoin(Aggregation(??agg1: ?pid, SAMPLE,
                                                                                                                                      {},
                                                                                                                                      G2=Group((?pid),
                                                                                                                                         Join(ToMultiSet({{(?pid, <http://www.example.com/products/Rl5RVl5R>)},
                                                                                                                                              {(?pid, <http://www.example.com/products/Rl5RVl5Q>)},
                                                                                                                                              {(?pid, <http://www.example.com/products/Rl5RVl5W>)},
                                                                                                                                              {(?pid, <http://www.example.com/products/Rl5RVl5Y>)},
                                                                                                                                              {(?pid, <http://www.example.com/products/Rl5RVl5U>)}}),
                                                                                                                                         Extend(Extend(BGP( ?pid ^<http://www.example.com/datam/op/isOfferOf> ?offid .
                                                                                                                                                        ?offid <http://www.example.com/datam/dp/condition> ?cond),
                                                                                                                                                ?newIncrement,
                                                                                                                                                if((?cond = 1), 0, 1) ),
                                                                                                                                         ?oldIncrement,
                                                                                                                                         if((?cond = 1), 1, 0) )))),
                                                                                                                      Aggregation(??agg2: ?newIncrement, SUM,
                                                                                                                      {}, G2),
                                                                                                                      Aggregation(??agg3: ?oldIncrement, SUM,
                                                                                                                      {}, G2)),
                                                                                                               ?pid,
                                                                                                               ??agg1),
                                                                                                        ?newOff,
                                                                                                        ??agg2),
                                                                                                 ?usedOff,
                                                                                                 ??agg3),
                                                                                         {?pid, ?newOff, ?usedOff}),
                                                                                    BGP( ?pid ^<http://www.example.com/datam/op/isOfferOf> ?oid .
                                                                                     ?oid <http://www.example.com/datam/dp/price> ?price)))),
                                                                 Aggregation(??agg2: ?oid, SAMPLE,
                                                                 {}, G1),
                                                                 Aggregation(??agg3: ?price, MIN,
                                                                 {}, G1),
                                                                 Aggregation(??agg4: ?newOff, SAMPLE,
                                                                 {}, G1),
                                                                 Aggregation(??agg5: ?usedOff, SAMPLE,
                                                                 {}, G1)),
                                                          ?pid,
                                                          ??agg1),
                                                   ?oid,
                                                   ??agg2),
                                            ?minPrice,
                                            ??agg3),
                                            ?newOff,
                                            ??agg4),
                                     ?usedOff,
                                     ??agg5),
                              {?pid, ?oid, ?minPrice, ?newOff, ?usedOff}),
                      ?oldOidFinal,
                      if((?newOff = 0), ?oid, <http://example/null>) ),
               ?newOidFinal,
               if((?usedOff = 0), ?oid, <http://example/null>) ),
        {?minPrice, ?newOff, ?newOidFinal, ?oid, ?oldOidFinal, ?pid, ?usedOff})