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: 'there are many kites that are being flown over the beach'. Count the number of vowels in the given sentence.
Example Output: 18

Example Input: Sentence: 'this picture shows a busy city crosswalk scene'. Count the number of consonants in the given sentence.
Example Output: 27

Example Input: Sentence: 'a wooden desk with a keyboard a laptop and a monitor'. Count the number of vowels in the given sentence.
Example Output:
18