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: 'an empty airport lobby with a tv and yellow chairs'. Count the number of vowels in the given sentence.

SOLUTION: 13

PROBLEM: Sentence: 'a cat that is half in a toilet'. Count the number of vowels in the given sentence.

SOLUTION: 10

PROBLEM: Sentence: 'a couple of women standing underneath a pnk umbrella'. Count the number of vowels in the given sentence.

SOLUTION:
17