i have tried the following code:

use strict;
use XML::Twig;
my $twig = new XML::Twig(TwigHandlers=> {NBA=>\&NBA}); 
$twig ->parsefile('nba.xml');
exit<p>

sub nba
{   my ($twig, $nba)=@_;
    $nba{stadium}= join ':', map {$_->text || ''}@{[$nba->children( 'S
+tadium')]; 
   print "$nba(stadium)\n"; 
   $nba ->delete; 
}
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