Classify text (Aboutness)

curl --request GET \
  --url 'https://api.openalex.org/text/topics?api_key='

{
  "meta": {
    "count": 123
  },
  "results": [
    {
      "id": "<string>",
      "display_name": "<string>",
      "score": 123,
      "subfield": {
        "id": "<string>",
        "display_name": "<string>"
      },
      "field": {
        "id": "<string>",
        "display_name": "<string>"
      },
      "domain": {
        "id": "<string>",
        "display_name": "<string>"
      }
    }
  ]
}