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 woman on a tennis court is holding a racquet'. Count the number of vowels in the given sentence.
Example Output: 16

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 number of different types of equipment that a band may use'. Count the number of consonants in the given sentence.
Example Output:
30