var_dump /eurovoc /concepts/4789
object(Concept)#2082 (1) {
  ["_c":protected]=>
  array(6) {
    ["inScheme"]=>
    array(2) {
      [0]=>
      int(100141)
      [1]=>
      int(100192)
    }
    ["prefLabel"]=>
    object(MLString)#2083 (1) {
      ["_c":protected]=>
      array(2) {
        ["en"]=>
        array(1) {
          [0]=>
          string(15) "free-trade area"
        }
        ["fr"]=>
        array(1) {
          [0]=>
          string(22) "zone de libre-échange"
        }
      }
    }
    ["scopeNote"]=>
    object(MLString)#2084 (1) {
      ["_c":protected]=>
      array(2) {
        ["en"]=>
        array(1) {
          [0]=>
          string(138) "States which have eliminated customs duties among themselves and established on their territories an area within which goods move freely.
"
        }
        ["fr"]=>
        array(1) {
          [0]=>
          string(147) "États ayant organisé entre eux une zone de libre circulation des marchandises sur leur territoire, en éliminant les droits de douane entre eux.
"
        }
      }
    }
    ["broader"]=>
    array(1) {
      [0]=>
      int(2519)
    }
    ["related"]=>
    array(8) {
      [0]=>
      int(2275)
      [1]=>
      int(176)
      [2]=>
      int(1463)
      [3]=>
      int(1631)
      [4]=>
      int(7220)
      [5]=>
      int(5430)
      [6]=>
      int(196)
      [7]=>
      int(1094)
    }
    ["notation"]=>
    array(1) {
      [0]=>
      int(4789)
    }
  }
}