Show Taxonomy Post Term Name

Hi everyone, hope you can give me a guide on this:

I’m trying to retrieve The Term Name in which the post is located

I only need the name of the term because I want to use it as a class , I’mean:

<section class="content">

<?php if ( have_posts() ) : while ( have_posts() ) : the_post(); ?>

<article class="article">
	<div class="jewel_small <strong><?php //get_term_name????() ?></strong>">
	 <?php the_jewel(); ?>
        </div>

</article>

 <?php endwhile; else: ?>
 <p>Sorry, no posts matched your criteria.</p>
 <?php endif; ?>

 </section>

How can I do this?

thanks