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.

Example Input: Sentence: 'a man playing a guitar and other musical instruments'. Count the number of vowels in the given sentence.
Example Output: 17

Example Input: Sentence: 'a man on a green field throwing a baseball'. Count the number of vowels in the given sentence.
Example Output: 14

Example Input: Sentence: 'a bed covered with clothes and luggage set out'. Count the number of vowels in the given sentence.
Example Output:
15