Marcello,
You do not say what marks the end of a sentence. In english, there are many ways to do this (period, question mark, exclamation mark, etc). Also, your regex does not look like it should work by your specifications. This will also break on the sentence "How are you today Dr. Smith?"

#!/usr/bin/perl
use strict;
use warnings;

my $msg = "One bright day in the middle of the night,\n";
$msg .= "two dead men got up to fight.\n";
$msg .= "Back to Back they faced each other,\n";
$msg .= "drew their swords and shot each other.\n";
$msg .= "A deaf police man heard this noise,\n";
$msg .= "came and killed those two dead boys.\n";
$msg .= "If you don't believe this lie is true,\n";
$msg .= "ask the blind man - he saw it too!\n";

$msg =~ tr/\n//d;
for my $sentence ( split /[.!?]/ , $msg ) {
    if ( $sentence =~ /^\s*([a-zA-Z0-9]+)\s+([a-zA-Z0-9]+)\s+/ ) {
        print "$1 $2\n";
    }
}
__END__
One bright
Back to
A deaf
If you
[download]

Cheers - L~R

---

---

• Are you posting in the right place? Check out Where do I post X? to know for sure.
• Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:

  <code> <a> <b> <big> <blockquote> <br /> <dd> <dl> <dt> <em> <font> <h1> <h2> <h3> <h4> <h5> <h6> <hr /> <i> <li> <nbsp> <ol> <p> <small> <strike> <strong> <sub> <sup> <table> <td> <th> <tr> <tt> <u> <ul>

• Snippets of code should be wrapped in <code> tags not <pre> tags. In fact, <pre> tags should generally be avoided. If they must be used, extreme care should be taken to ensure that their contents do not have long lines (<70 chars), in order to prevent horizontal scrolling (and possible janitor intervention).
• Want more info? How to link or How to display code and escape characters are good places to start.