code: def remove_this_factuality(self,factuality_id):
          
          for fact in self.get_factualities():
              if fact.get_id() == factuality_id:
                  self.node.remove(fact.get_node())
                  break
docs: Removes the factuality for the given factuality identifier
          @type factuality_id: string
          @param factuality_id: the factuality identifier to be removed