I guessed that might be the case, how about using Xpath ? 
#!perl
use strict;
use HTML::TreeBuilder::XPath; 
my $tree = HTML::TreeBuilder::XPath->new;  
$tree->parse_file(\*DATA);

my @items = $tree->findnodes( '//div[@class="review-content"]' )
   or die("no items: $!\n");
for my $item (@items) {
  for ( $item->findnodes( '//meta') ){
    print $_->attr('itemprop');
    print ' = ';
    print $_->attr('content')."\n";
  }
}

[download]
poj

In reply to Re^3: Extracting span and meta content with HTML::TreeBuilder by poj
in thread Extracting span and meta content with HTML::TreeBuilder by wrinkles

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