 "Note",
  "content": "My dog has fleas.",
  "css": "http://www.csszengarden.com/217/217.css?v=8may2013"
}
              </pre>
            </div>
          </figure>
        </section>

        <p>
          When a JSON-LD enabled Activity Streams 2.0 implementation encounters
          a JSON document identified using the
          "<code>application/activity+json</code>" MIME media type, and
          that document does not contain a <code>@context</code> property
          whose value includes a referen