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 crowd of people at a festival type event in front of a clock tower'. Count the number of consonants in the given sentence.

SOLUTION: 33

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

SOLUTION: 14

PROBLEM: Sentence: 'a two story bus driving down a city street'. Count the number of vowels in the given sentence.

SOLUTION:
11