A Property is a single field in a Class. It's the thing that a property field in an Atom points to. An example is `birthdate`. An instance of Property requires various Properties, most notably a `datatype` (e.g. `string` or `integer`), a human readable `description` (such as the thing you're reading), and a `shortname`.
You can use HTTP content negotation to fetch this resource as JSON, JSON-LD, AD3 or Turtle. You can also try putting .json, .jsonld, .ttl or .ad3 behind the URL.