Index: src/wp-admin/options-general.php
===================================================================
--- src/wp-admin/options-general.php	(revision 55298)
+++ src/wp-admin/options-general.php	(working copy)
@@ -76,8 +76,17 @@
 ?>
 <tr>
 <th scope="row"><label for="blogdescription"><?php _e( 'Tagline' ); ?></label></th>
-<td><input name="blogdescription" type="text" id="blogdescription" aria-describedby="tagline-description" value="<?php form_option( 'blogdescription' ); ?>" class="regular-text" placeholder="<?php echo $sample_tagline; ?>" />
-<p class="description" id="tagline-description"><?php _e( 'In a few words, explain what this site is about.' ); ?></p></td>
+<td><input name="blogdescription" type="text" id="blogdescription" aria-describedby="tagline-description" value="<?php form_option( 'blogdescription' ); ?>" class="regular-text" />
+<p class="description" id="tagline-description">
+	<?php _e( 'In a few words, explain what this site is about.' ); ?>
+	<?php
+		printf(
+			/* translators: %s: Site tagline example. */
+			'Example: &#8220;%s&#8221;',
+			$sample_tagline
+		);
+	?>
+</p></td>
 </tr>
 
 <?php