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: 'three people sitting on a park bench waving at camera'. Count the number of vowels in the given sentence.

SOLUTION: 17

PROBLEM: Sentence: 'two children sitting at a table with plates of food'. Count the number of vowels in the given sentence.

SOLUTION: 15

PROBLEM: Sentence: 'a herd of elephants walking across a lush grass field'. Count the number of consonants in the given sentence.

SOLUTION:
29