# Vocabularies

WD = RDF::Vocabulary.new('http://www.wikidata.org/entity/')
WDT = RDF::Vocabulary.new('http://www.wikidata.org/prop/direct/')
RDFS = RDF::Vocabulary.new('http://www.w3.org/2000/01/rdf-schema#')
SCHEMA = RDF::Vocabulary.new('https://schema.org/')
COUNTRY = RDF::Vocabulary.new('https://daniel.degu.cl/data/countries.ttl#Country-')
MIG = RDF::Vocabulary.new('https://daniel.degu.cl/data/mig.ttl#')

PREFIXES = {
  wd: WD,
  wdt: WDT,
  rdfs: RDFS,
  schema: SCHEMA,
  country: COUNTRY,
  mig: MIG
}

def prefixes(*namespaces)
  namespaces.map do |ns|
    "@prefix #{ns}: <#{PREFIXES[ns]}> .\n"
  end.join
end