Given the following lists in Python, what code is required >>> _____ to print the specified value

1.)

>>> xo = [1, 3, [5, 7], 9]

>>> _______________

7

2.)

>>> xo = [[7]]

>>> _______________

7

3.)

>>> xo = [1, [2, [3, [4, [5, [6, [7]]]]]]]

>>> _______________

7

4.)

>>> pokemon = {'pikachu': 25, 'dragonair': 148, 'mew': 151}

>>> ___________

25

5.)

>>> pokemon['jolteon'] = pokemon[mew]

>>> ______

151