(X), the first one (dest-city(paris)) will be taken
  as the answer to the destination issue in the visa-plan;<br>
   need to be able to represent disjunction + decide what "dest-city" means 
 in this case - desired or potential destination&nbsp; <br>
   2. using forget_all in plans will make it impossible to do information 
sharing,  since all info is wiped out after doing the second simultaneous 
dialogue is a solution to do forget_all only when returning to top?<br>
     </p>
   </blockquote>
    <b>* </