x id reference

I have the following element in a translation unit <x id="76"/>.

In the tag-defs list, there are two entries for this id:

<tag id="76">
<ph name="{76}" word-end="false">&lt;uicontrol varref="PP_Desktop" id="GUID-B0F3D486-0E6F-4B50-937D-49912563D292"&gt;Desktop&lt;/uicontrol&gt;</ph>
</tag>

and

<tag id="76">
<st> 
&lt;/li&gt; 
&lt;/ul&gt; 
&lt;/prereq&gt; 
&lt;context id="CONTEXT_1C753EE8EA17497CA9F46DB00A2B2D51"&gt; 
&lt;p id="GUID-C06807E1-E68F-429E-8D47-EE9652AC621E"&gt; 
&lt;note type="tip" id="GUID-42A35A63-5538-4107-B213-621AA50A7D44"&gt;</st>
</tag>

 How can I know to which the id references? When there are two, always the ph element?

Thanks

Thomas