$ perl -le'
use warnings;
use strict;
use 5.10.0;
my $x   = "a b c d e f g h";
my @set = splice @{ [ split " ", $x ] }, 3;
print "@set";
'
d e f g h
[download]

Update:

$ perl -le'
use warnings;
use strict;
use 5.10.0;
my $x   = "a b c d e f g h";
my @set = split " ", ( split " ", $x, 4 )[ -1 ];
print "@set";
'
d e f g h
[download]