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  1. or download this
    use Lingua::StopWords qw( getStopWords );
my $stopwords = getStopWords('en');
...

# prints "walrus goo goo g'joob"
print join ' ', grep { !$stopwords->{$_} } @words;
  2. or download this
    open(FILESOURCE, "sample.txt") or die("Unable to open requested file."
+);
my $document = <FILESOURCE>;
...
my $stopwords = getStopWords('en');

print join ' ', grep { !$stopwords->{$_} } $document;