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 man sitting on a bench in front of a boat'. 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 group of people riding boars on top of the ocean'. Count the number of vowels in the given sentence.

Ex Output:

18