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 dog is laying on a blanket and relaxing'. Count the number of consonants in the given sentence.

SOLUTION: 20

PROBLEM: Sentence: 'two men are standing next to a brownish black elephant'. Count the number of vowels in the given sentence.

SOLUTION: 15

PROBLEM: Sentence: 'two red flags sticking out of the ground of a lush green hillside'. Count the number of vowels in the given sentence.

SOLUTION:
19