socal_cities = {'Los Angeles', 'San Diego', 'Montebello', 'Whittier'}
norcal_cities = {'San Francisco', 'San Jose', 'Sunnyvale', 'Santa Clara'}

print(f'{socal_cities =}')
print(f'{norcal_cities =}')

print(f'{socal_cities | norcal_cities =}')
print(f'{socal_cities & norcal_cities =}')