{'America': {'LA': {'1123': ['A', '2014-05-01', [('A', '211'), ('AD', '398'
    )]], '1135': ['D', '2014-05-01', [('A', '211'), ('AD', '398')]]}, 'SF':
    {'1145': ['I', '2014-05-01', [('A', '211'), ('AD', '398')]]}}, 'Dubai':
    {'DUB': {'9800': ['I', '2014-05-01', [('A', '211'), ('AD', '398')]],
    '9990': ['D', '2014-05-01', [('A', '211'), ('AD', '398')]]}, 'DUX': {
    '9670': ['D', '2014-05-01', [('A', '211'), ('AD', '398')]]}}, 'England':
    {'LND': {'3564': ['A', '2014-05-01', [('A', '211'), ('AD', '398')]]}}}
How to make a nested dictionary from a list's items?