Project(OrderBy(Graph(?g,
                      Filter(contains(str(?source) , "conservativetreehouse") ,
                             BGP( ?event <http://purl.org/dc/terms/description> ?desc .
                                  ?event <http://purl.org/ontology/storyline/attributedTo> ?source .
                                  ?event <http://purl.org/dc/terms/references> ?link .
                                  ?event <http://schema.org/startDate> ?date))), (?date)),
        {?desc, ?date, ?link})