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 guy in a white shirt, jeans, and a baseball hat flipping on a skate board'. Count the number of vowels in the given sentence.

SOLUTION: 23

PROBLEM: Sentence: 'a woman getting ready to hit a tennis ball on a court'. Count the number of vowels in the given sentence.

SOLUTION: 17

PROBLEM: Sentence: 'convention with people standing at table with refreshments'. Count the number of vowels in the given sentence.

SOLUTION:
17