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 bunch of umbrellas overlooking the ocean at a beach'. Count the number of vowels in the given sentence.

SOLUTION: 19

PROBLEM: Sentence: 'a person with a umbrella on a train track'. Count the number of vowels in the given sentence.

SOLUTION: 13

PROBLEM: Sentence: 'orange cat sitting on bench outside in sun'. Count the number of vowels in the given sentence.

SOLUTION:
14