In this task, you need to count the number of vowels (letters 'a', 'e', 'i', 'o', 'u') / consonants (all letters other than vowels) in the given sentence.

Ex Input:
Sentence: 'an empty airport lobby with a tv and yellow chairs'. Count the number of vowels in the given sentence.

Ex Output:
13


Ex Input:
Sentence: 'the four airplanes are flying through the sky'. Count the number of consonants in the given sentence.

Ex Output:
25


Ex Input:
Sentence: 'a young boy on skies poses on a mountain'. Count the number of vowels in the given sentence.

Ex Output:

15