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: 'two small dogs running in the water on a beach'. Count the number of vowels in the given sentence.

SOLUTION: 13

PROBLEM: Sentence: 'the large cat sits on the ledge beside a window'. Count the number of vowels in the given sentence.

SOLUTION: 15

PROBLEM: Sentence: 'an elephant and birds in a grassy area by trees'. Count the number of vowels in the given sentence.

SOLUTION:
14