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

SOLUTION: 20

PROBLEM: Sentence: 'a mirror is on a pole by a light'. Count the number of vowels in the given sentence.

SOLUTION: 10

PROBLEM: Sentence: 'a woman walking down the stairs with another trying to pick up a banana peel'. Count the number of vowels in the given sentence.

SOLUTION:
23