Update image-retrieval-for-arguments.html

clef24/touche24-web/image-retrieval-for-arguments.html

@@ -191,6 +191,8 @@ <h2 id="submission">Submission</h2>
                     to transform the premise into a headline. </li>
             </ol>
 
+            <p>Images alone can be ambiguous and difficult to understand without context, e.g. if they refer to symbolism. That's why we offer the option to submit a rationale along with the image. The rationale is a piece of text that helps us understand the image. For example, it could be a caption or contextual information about the image. The image and rationale will be evaluated together to see how this combination conveys the premise.</p>
+
 
 
             <h2 id="important_dates">Important Dates</h2>