ce to the normative
          <a href="https://www.w3.org/ns/activitystreams">Activity Streams 2.0 JSON-LD
          @context definition</a>, the implementation MUST assume that the
          normative @context definition still applies.
        </p>
      </section>

      <section id="urls">
        <h3>IRIs and URLs</h3>

        <p>
          This specification uses IRIs [[!RFC3987]].  Every URI [[!RFC3986]] is
          also an IRI, so a URI may be used wherever an IRI is named.  There are
          two