@prefix rdf: . @prefix ns1: . @prefix oa: . ns1:D3E844F0-5292-11EB-86A8-ABD8205A52B3 rdf:type oa:SpecificResource . @prefix pwdr: . @prefix ns4: . ns1:D3E844F0-5292-11EB-86A8-ABD8205A52B3 pwdr:describedby ns4:fuel_cells_work_search , ; oa:hasSelector ; oa:hasSource .