Google Knowledge Graph API `articleBody` field missing from `detailedDescription`

Question

Following the sample request for Taylor Swift shown here, I get the following response which does not match the response shown on the site. Moreover, I'm interested in the articleBody of the detailedDescription field which is not being returned the same way. Has there been an update to the API that was not reflected in the documentation? Is there a way to request the articleBody via the Python API?

{
  "@context": {
    "@vocab": "http://schema.org/",
    "goog": "http://schema.googleapis.com/",
    "EntitySearchResult": "goog:EntitySearchResult",
    "detailedDescription": "goog:detailedDescription",
    "resultScore": "goog:resultScore",
    "kg": "http://g.co/kg"
  },
  "@type": "ItemList",
  "itemListElement": [
    {
      "@type": "EntitySearchResult",
      "result": {
        "@id": "kg:/m/0dl567",
        "name": "Taylor Swift",
        "@type": [
          "Thing",
          "Person"
        ],
        "description": "American singer",
        "image": {
          "contentUrl": "http://t0.gstatic.com/images?q=tbn:ANd9GcST848UJ0u31E6aoQfb2nnKZFyad7rwNF0ZLOCACGpu4jnboEzV",
          "url": "https://en.wikipedia.org/wiki/Begin_Again_(Taylor_Swift_song)"
        },
        "url": "http://taylorswift.com/"
      },
      "resultScore": 1237.141968
    }
  ]
}