Project(Extend(Extend(AggregationJoin(Aggregation(??agg1: ?p, SAMPLE,
                                                  {},
                                                  G1=Group((?p),
                                                     Filter((?type = <http://purl.org/net/ns/ext/moma#Institution>) || (?type = <http://purl.org/net/ns/ext/moma#Individual>),
                                                     BGP( ?s ?p ??2 .
                                                      ??2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> ?type)))),
                                      Aggregation(??agg2: ?p, COUNT, {}, G1)),
                      ?p,
                      ??agg1),
               ?count,
               ??agg2),
        {?p, ?count})