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 on a green field throwing a baseball'. Count the number of vowels in the given sentence.

SOLUTION: 14

PROBLEM: Sentence: 'a cat is sitting on the floor and watching television'. Count the number of consonants in the given sentence.

SOLUTION: 27

PROBLEM: Sentence: 'an image of a man with his hands on a bull'. Count the number of vowels in the given sentence.

SOLUTION:
13