{
  "@context": {
    "rdfs": "http://www.w3.org/2000/01/rdf-schema#",
    "rdfs:subClassOf": { "@id": "rdfs:subClassOf", "@type": "@id" }
  },
  "@id": "http://example.com/vocab#class",
  "@type": "rdfs:Class",
  "rdfs:subClassOf": "http://example.com/vocab#someOtherClass"
}