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 skateboard using it to ride a rail'. Count the number of vowels in the given sentence.

SOLUTION: 17

PROBLEM: Sentence: 'a large jetliner flying through a sky filled with clouds'. Count the number of vowels in the given sentence.

SOLUTION: 15

PROBLEM: Sentence: 'the tower of a building that includes a clock and windows'. Count the number of vowels in the given sentence.

SOLUTION:
17