gt; 
   &lt;http://purl.org/dc/terms/modified&gt;
"2010-05-30T09:21:28-04:00"^^http://www.w3.org/2001/XMLSchema#dateTime
.
</pre>
</div>
<div id="blank-nodes" class="section">
<h3>
<span class="secno">
5.9
</span>
Blank
Nodes
</h3>
<p>
At
times,
it
becomes
necessary
to
be
able
to
express
information
without
being
able
to
specify
the
subject.
Typically,
this
is
where
blank
nodes
come
into
play.
In
JSON-LD,
blank
node
identifiers
are
automatically
created
if
a
subject
is
not
specified
using
the
<code>
@
</cod