{
  "@context": [
    "http://api.conceptnet.io/ld/conceptnet5.5/context.ld.json",
    "http://api.conceptnet.io/ld/conceptnet5.5/pagination.ld.json"
  ],
  "@id": "/a/[/r/IsA/,/c/en/boy/,/c/en/young_human_male/]",
  "error": {
    "details": "'/a/[/r/IsA/,/c/en/boy/,/c/en/young_human_male/]' is not an assertion in ConceptNet.",
    "status": 404
  }
}