@prefix rdf: . @prefix ns1: . @prefix bibo: . ns1:id rdf:type bibo:Document , bibo:Periodical . @prefix dcterms: . ns1:id dcterms:bibliographicCitation "Official gazette / People's Democratic Republic of Yemen / Sanha : People's Democratic Republic of Yemen , [19..]-" . @prefix ns4: . ns1:id dcterms:contributor ns4:id . @prefix ns5: . ns1:id ns5:holdingsCount 0 .