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: 'three kids are playing soccer in the grass'. Count the number of consonants in the given sentence.

SOLUTION: 23

PROBLEM: Sentence: 'a teenager on a blue skateboard has his arm in the air'. Count the number of consonants in the given sentence.

SOLUTION: 23

PROBLEM: Sentence: 'a baseball player is standing at home plate ready to bat'. Count the number of vowels in the given sentence.

SOLUTION:
18