List all possibilities of a nested-list by flattened lists

[sparkt]

S = [['he', 'she'], 'has', ['1', '2'], 'watch']

A list inside the list S indicates a possibility of a statement.
So there are four possibilities here:

'he has 1 watch'
'he has 2 watch'
'she has 1 watch'
'she has 2 watch'

(Just for demonstration so it doesn't need to be grammatically correct)

I'm sure there's a simple way to list out all possibilities, but how? Any help would be much appreciated!

[sparkt]

Got that!

import itertools
S = [['he', 'she'], ['has'], ['1', '2'], ['watch']]
print(list(itertools.product(*S)))

Output: [('he', 'has', '1', 'watch'), ('he', 'has', '2', 'watch'), ('she', 'has', '1', 'watch'), ('she', 'has', '2', 'watch')]