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 in a chair opening empty luggage'. Count the number of vowels in the given sentence.

Ex Output:
15

Ex Input:
Sentence: 'a cat that is half in a toilet'. Count the number of vowels in the given sentence.

Ex Output:
10

Ex Input:
Sentence: 'a smiling white female with black rimmed glasses'. Count the number of vowels in the given sentence.

Ex Output:
14