<https://www.mamanguape.pb.gov.br/category/licitacoes/2018-licitacoes/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.mamanguape.pb.gov.br/pregao-presencial-no-023-2018-areia-brita-e-pedras-graniticas/>