my %teams       = ( ... );
my %restaurants = ( ... );
my %Businesses  = (
    teams       => \%teams,
    restaurants => \%restaurants,
);

##</code><code>##

my $teams       = { ... };
my $restaurants = { ... };
my %Businesses  = (
    teams       => $teams,
    restaurants => $restaurants,
);

##</code><code>##

my %Businesses = (
    teams       => {
        NFL => { ... },
        ...
    },
    restaurants => {
        FASTFOOD => { ... },
        ...
    },
);

##</code><code>##

$Businesses{teams}{NFL}{JETS}

##</code><code>##

... NFL => [ qw{ JETS PATRIOTS GIANTS } ], ...