Unfortunately your question isn't terribly clear, so I'm not entirely sure what you're looking for.
However, one thing I would suggest - if you want to match after the last occurance of something, it may be easier to apply a regex to a reversed string, e.g: 
my $reverse = reverse $line;
$reverse =~ s| \w* ; \s* > |>|x;
$line = reverse $reverse;

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In reply to Re: parsing question by kilinrax
in thread parsing question by Washie101

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