Define a sample perl hash of arrays using the following code?

%tgs = array(

    'top 5' =>  [ 'Best linux OS', 'Best System Monitoring', 'Best Linux Text editors' ],

    '15 example' => [ 'rpm command', 'crontab command', 'Yum command', 'grep command' ],

); 

$tgs = array(

    'top 5' =>  [ 'Best linux OS', 'Best System Monitoring', 'Best Linux Text editors' ],

    '15 example' => [ 'rpm command', 'crontab command', 'Yum command', 'grep command' ],

);  

%tgs = (

    'top 5' =>  [ 'Best linux OS', 'Best System Monitoring', 'Best Linux Text editors' ],

    '15 example' => [ 'rpm command', 'crontab command', 'Yum command', 'grep command' ],

);

$tgs = (

    'top 5' =>  [ 'Best linux OS', 'Best System Monitoring', 'Best Linux Text editors' ],

    '15 example' => [ 'rpm command', 'crontab command', 'Yum command', 'grep command' ],

);