TASK DEFINITION: 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.
PROBLEM: Sentence: 'a man is standing outside with a slice of pizza'. Count the number of consonants in the given sentence.

SOLUTION: 22

PROBLEM: Sentence: 'a horse standing in a grassy field with trees'. Count the number of consonants in the given sentence.

SOLUTION: 24

PROBLEM: Sentence: 'a leather case filled with metal pairs scissors'. Count the number of vowels in the given sentence.

SOLUTION:
15