What's wrong with the following paragraph code?
<p>First sentence.<br Second sentence.</p>
<br> should be <hr>
<br>
<hr>
<p> should be <pre>
<p>
<pre>
First sentence. should be inside a <span>
First sentence.
<span>
<br Second sentence. should be <br> Second sentence.
<br Second sentence.
<br> Second sentence.