Link Description crawled property in a display template - SP2013

I am a bit of a noob when it comes to display templates, so please bare with me.

I am trying to map the link description from a URL column to my display template. However I have no idea what that property is called. This is probably very simple, but as I said I am a bit of a noob.

I have searched through the crawled properties but cannot find it and am not sure if it is crawled out of the box.

I have tried a few different random mappings to see if the text gets pulled in, but it doesn't return any values. Such as:

'Link Text'{Link Text}:'OWS_URLDescription';

Then added:

var linkText = $getItemValue(ctx, "Link Text");

My markup:

<div class="slide" data-displaytemplate="ItemLargePicture">
    _#= pictureMarkup =#_
        <div class="caption">
        <h2 class="title"> _#= line1 =#_</h2>
            <p class="text"> _#= line2 =#_</p>
            <p class="link"><a href="_#= linkURL =#_" target="_blank">_#= I NEED THIS VALUE =#_</a></p>
        </div>
    </div>

Any help would be much appreciated.