The Annotation Vocabulary JSON-LD context is defined to be at http://www.w3.org/ns/oa

Using that context, convert the content below into an RDF graph, then convert that graph back into JSON-LD. Is the content the same?

    {
      "@context": "http://www.w3.org/ns/anno.jsonld",
      "id": "http://example.org/anno4",
      "type": "Annotation",
      "body": "http://example.org/description1",
      "target": {
        "id": "http://example.com/image1#xywh=100,100,300,300",
        "type": "Image",
        "format": "image/jpeg"
      }
    }