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 couple of horses are standing in a field'. Count the number of vowels in the given sentence.

SOLUTION: 15

PROBLEM: Sentence: 'a woman in a kitchen cooking something on the stove'. Count the number of consonants in the given sentence.

SOLUTION: 25

PROBLEM: Sentence: 'a black bird standing in the grass alone'. Count the number of consonants in the given sentence.

SOLUTION:
22