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 teddy bear that is sitting on a tree branch'. Count the number of consonants in the given sentence.

SOLUTION: 23

PROBLEM: Sentence: 'a model plane is flying through a cloudy sky'. Count the number of consonants in the given sentence.

SOLUTION: 24

PROBLEM: Sentence: 'a man skiing down a mountain on a modified ski'. Count the number of vowels in the given sentence.

SOLUTION:
17