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: 'an image of a clock that is next to a group of books'. Count the number of consonants in the given sentence.

SOLUTION: 23

PROBLEM: Sentence: 'a bunch of people walking near some tall steps'. Count the number of vowels in the given sentence.

SOLUTION: 14

PROBLEM: Sentence: 'a small horse is hiding behind an adult horse'. Count the number of vowels in the given sentence.

SOLUTION:
14