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 baseball player swings the bat to hit the ball'. Count the number of consonants in the given sentence.
Example Output: 26

Example Input: Sentence: 'a crew of people looking at an airplane'. Count the number of vowels in the given sentence.
Example Output: 15

Example Input: Sentence: 'a desk has two laptops, a monitor, mouse, and keyboard on it'. Count the number of vowels in the given sentence.
Example Output:
19