[ {
  "@id" : "http://semantics.gr/authorities/time-periods/4th-millennium-BC",
  "http://www.europeana.eu/schemas/edm/end" : [ {
    "@value" : "-3001",
    "@language" : "en"
  } ],
  "http://www.europeana.eu/schemas/edm/begin" : [ {
    "@value" : "-4000",
    "@language" : "en"
  } ],
  "http://www.w3.org/2004/02/skos/core#altLabel" : [ {
    "@value" : "4000 - 3001 π.Χ.",
    "@language" : "el"
  }, {
    "@value" : "4000 - 3001 BC",
    "@language" : "en"
  } ],
  "http://www.w3.org/2004/02/skos/core#prefLabel" : [ {
    "@value" : "4th millennium BC",
    "@language" : "en"
  }, {
    "@value" : "4η χιλιετία π.Χ.",
    "@language" : "el"
  } ],
  "@type" : [ "http://www.europeana.eu/schemas/edm/Timespan" ]
} ]