llection are
        represented using the <code>items</code> property while ordered items
        are represented using the <code>orderedItems</code> property.
      </p>

      <figure>
        <figcaption>
          The following is a simple unordered collection:
        </figcaption>
<div id="ex21-jsonld" style="display: block;">
<pre class="example highlight json">{
  "@context": "https://www.w3.org/ns/activitystreams",
  "summary": "Object history",
  "type": "Collection",
  "totalItems": 2,
  "items"