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 cat that is sleeping on a chair'. Count the number of consonants in the given sentence.

SOLUTION: 15

PROBLEM: Sentence: 'a plate of pasta and pepperoni pizza and a slice with vegetables'. Count the number of consonants in the given sentence.

SOLUTION: 31

PROBLEM: Sentence: 'three small sheep are standing on a road'. Count the number of consonants in the given sentence.

SOLUTION:
20