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: 'hot pizza, ready to be sliced and eaten, sitting in the middle of a large table'. Count the number of vowels in the given sentence.
Example Output: 25

Example Input: Sentence: 'a cow crosses a stream while sun rays shine down on the water'. Count the number of vowels in the given sentence.
Example Output: 18

Example Input: Sentence: 'a boy jumping on his skateboard at a skate park'. Count the number of vowels in the given sentence.
Example Output:
15

