anchor.diff:                      <div>
                           <h2 class="challenge_s sponsor">Challenge Sponsor</h2>
                           <p class ="website">
  -                            <a href="https://blogs.siemens.com/curiosity-project/stories/25391/">View Challenge</a>
  +                            <a href="https://blogs.siemens.com/en/The_Curiosity_Project.entry.html/2016/10/21/40011-siemens-curiosity-city-hack-manchester-junior.html">View Challenge</a>
                       </div>
                   </li> 
   
  
positive.code:                     </div>
                  </li>
                  <!-- CRUK -->
                  <li style="background-image: url(/images/sponsors/challenge_cruk_kids_teens.png); background-repeat: no-repeat;  background-position: 50% 20%; background-size: 90%;">
                      <div>
                          <h2 class="challenge_s sponsor">Sponsored by Valtech</h2>
                          <p class ="challenge"> 
  
negative.code:                     <div>
                          <h2 class="challenge_s sponsor">Challenge</h2>
                          <p class ="website">
                              <a href="https://blogs.siemens.com/en/The_Curiosity_Project.entry.html/2016/10/21/40011-siemens-curiosity-city-hack-manchester-junior.html">View Challenge</a>
                              <a href="http://www.siemens.co.uk/">Visit Website</a></p>
                      </div>
                  </li> 
  