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 bus is sitting parked under a roof'. Count the number of consonants in the given sentence.

SOLUTION: 17

PROBLEM: Sentence: 'a little girl stands on a tennis court holding a tennis racket'. Count the number of consonants in the given sentence.

SOLUTION: 33

PROBLEM: Sentence: 'a tennis player walks across the tennis court with his racket'. Count the number of vowels in the given sentence.

SOLUTION:
17