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: 'there are three computers on the desk, two of which are turned on'. Count the number of consonants in the given sentence.

SOLUTION: 32

PROBLEM: Sentence: 'a broken park bench in the middle of a grassy lawn'. Count the number of consonants in the given sentence.

SOLUTION: 27

PROBLEM: Sentence: 'a field that has some snow and a man skiing in it'. Count the number of vowels in the given sentence.

SOLUTION:
15