var_dump /eurovoc /concepts/4003
object(Concept)#3933 (1) {
  ["_c":protected]=>
  array(6) {
    ["inScheme"]=>
    array(2) {
      [0]=>
      int(100141)
      [1]=>
      int(100183)
    }
    ["prefLabel"]=>
    object(MLString)#3934 (1) {
      ["_c":protected]=>
      array(2) {
        ["en"]=>
        array(1) {
          [0]=>
          string(16) "foreign national"
        }
        ["fr"]=>
        array(1) {
          [0]=>
          string(23) "ressortissant étranger"
        }
      }
    }
    ["altLabel"]=>
    object(MLString)#3935 (1) {
      ["_c":protected]=>
      array(2) {
        ["en"]=>
        array(2) {
          [0]=>
          string(5) "alien"
          [1]=>
          string(27) "national of a third country"
        }
        ["fr"]=>
        array(2) {
          [0]=>
          string(9) "étranger"
          [1]=>
          string(29) "ressortissant d'un pays tiers"
        }
      }
    }
    ["broader"]=>
    array(1) {
      [0]=>
      int(3521)
    }
    ["related"]=>
    array(6) {
      [0]=>
      int(688)
      [1]=>
      int(2509)
      [2]=>
      int(5592)
      [3]=>
      int(583)
      [4]=>
      int(2300)
      [5]=>
      int(950)
    }
    ["notation"]=>
    array(1) {
      [0]=>
      int(4003)
    }
  }
}