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: 'a jockey on a horse running down a beach'. Count the number of vowels in the given sentence.

Ex Output:
13


Ex Input:
Sentence: 'a meal of a peanut butter and jelly sandwich with poprocks mixed in'. Count the number of vowels in the given sentence.

Ex Output:
20


Ex Input:
Sentence: 'a small boy is feeding the elephants through a fence'. Count the number of vowels in the given sentence.

Ex Output:

16