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 boy swinging his bat towards a baseball'. Count the number of vowels in the given sentence.

SOLUTION: 12

PROBLEM: Sentence: 'a vehicle underneath traffic lights surrounded by colorful trees'. Count the number of vowels in the given sentence.

SOLUTION: 20

PROBLEM: Sentence: 'there is a zebra grazing for food in a zoo'. Count the number of consonants in the given sentence.

SOLUTION:
18