// http://localhost:5050/articles/1
{
  "_type":         "Article",
  "href":          "http://localhost:5050/articles/1",
  "title":         "First Article",
  "text":          "Lorem Ipsum",
  "comments_href": "http://localhost:5050/articles/1/comments",
  "latest_comment_href": "http://localhost:5050/articles/1/comments/latest"
}

// http://localhost:5050/articles/1/comments/1
{
  "_type":         "Comment",
  "href":          "http://localhost:5050/articles/1/comments/1",
  "author":        "Paul",
  "text":          "This is the first comment on article 1",
  "article_href":  "http://localhost:5050/articles/1"
}