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 man working in a restaurant slicing pizza'. Count the number of vowels in the given sentence.

SOLUTION: 14

PROBLEM: Sentence: 'a person skiing down a steep snowy hill'. Count the number of vowels in the given sentence.

SOLUTION: 11

PROBLEM: Sentence: 'a zebra that is running through a green field'. Count the number of vowels in the given sentence.

SOLUTION:
14