Could you give an example of what it is you're trying to grab? Would "this" and "that" be a safe example? See if this works for you:

$str = 'I know "This" and "That" but I want to know more...';

if ($str =~ m/(\".+?\" and \".+?\")/i) {
  print "Found: $1\n";
}

^d
Found: "This" and "That"
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#!/home/bbq/bin/perl
# Trust no1!