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: 'three skiers gathering supplies next to a snowmobile'. Count the number of consonants in the given sentence.
Example Output: 28

Example Input: Sentence: 'motorcyclists riding in separate lane from regular city traffic'. Count the number of vowels in the given sentence.
Example Output: 19

Example Input: Sentence: 'a baseball player standing next to a base on a field'. Count the number of vowels in the given sentence.
Example Output:
17