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: 'people in the ocean holding onto kites, while they are on boards'. Count the number of vowels in the given sentence.
Example Output: 22

Example Input: Sentence: 'a woman getting ready to hit a tennis ball on a court'. Count the number of vowels in the given sentence.
Example Output: 17

Example Input: Sentence: 'a bunch of toys set up on a table'. Count the number of consonants in the given sentence.
Example Output:
15