I've been a little confused about all this too, so I googled textcorpora and came up with this Wikipedia link:

http://en.wikipedia.org/wiki/Text_corpus

in which case you can see that the data:

the/article book/noun
he/pronoun is/verb ill/adjective
[download]

are words tagged with the parts of speech they represent. So what he's wanting to do is deconvolute the word/part-of-speech pairs back into sentences followed by the equivalent parts of speech in the same order.

the book article noun
he is ill pronoun verb adjective
[download]

So what he's wanting is a program that would see (\w+)\/(\w+) pairs, split them, push each into an array and once the parse is complete, 'emit' the data in sequential order, first the array of words and second the array of parts of speech. This word-space-number example is just a step on the way to get his textcorpora stuff working.

That's the explanation; I hope it helps

This is my code example:

#!/usr/bin/perl
use warnings;
use strict;
my @words;
my @parts_of_speech;
while(my $sentence = <DATA>) {
    @words = ();
    @parts_of_speech = ();
    while ($sentence =~ /(\w+)\/(\w+)/g ) {
        push(@words, $1) if $1;
        push(@parts_of_speech, $2) if $2;
    }
    print $_, " " for @words;
    print $_, " " for @parts_of_speech;
    print "\n";
}

__DATA__
the/article book/noun
he/pronoun is/verb ill/adjective
[download]

The output is:

C:\Code>perl linguistic.pl
the book article noun
he is ill pronoun verb adjective
[download]

Update: cleanup