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

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

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

$Businesses{teams}{NFL}{JETS}

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