Microformat ex. 1: with frequency as a sub-property of adr

<div class="vcard">
                 <b class="fn org">Heart FM</b>
                    <span class="adr">
                        (<span class="locality">Sussex</span>)
                        <i class="frequency">
                         <span class="hmeasure">
                          <span class="num">102.4</span>
                          <span class="unit">MHz</span>
                        </span>
                         (<abbr title="50.9761;0.2293" class="geo">
                              Eastbourne
                          </abbr>)
                 </i>
                  </span>
         </div>