[ {
  "@id" : "http://semantics.gr/authorities/general-terms-ekt/6961",
  "http://www.w3.org/2004/02/skos/core#narrower" : [ {
    "@id" : "http://semantics.gr/authorities/general-terms-ekt/3077"
  } ],
  "http://www.w3.org/2004/02/skos/core#prefLabel" : [ {
    "@value" : "catalysts",
    "@language" : "en"
  } ],
  "@type" : [ "http://www.w3.org/2004/02/skos/core#Concept" ]
} ]