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: 'the man and woman congregate outside of the refrigerator'. Count the number of consonants in the given sentence.

Ex Output:
28


Ex Input:
Sentence: 'people enjoying the slopes at a ski resort on a sunny day'. Count the number of vowels in the given sentence.

Ex Output:
18


Ex Input:
Sentence: 'three zebras drinking from a shallow pool of water'. Count the number of vowels in the given sentence.

Ex Output:

15