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.

Ex Input:
Sentence: 'groups of people in a field sitting down, standing and walking, with tent areas in the background'. Count the number of vowels in the given sentence.

Ex Output:
28


Ex Input:
Sentence: 'group of horses and their riders traveling through a path in forest'. Count the number of vowels in the given sentence.

Ex Output:
20


Ex Input:
Sentence: 'a man wearing emergency gear and a helmet'. Count the number of vowels in the given sentence.

Ex Output:

14