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 cat that is half in a toilet'. Count the number of vowels in the given sentence.
Example Output: 10

Example Input: Sentence: 'people riding elephants in a body of water'. Count the number of consonants in the given sentence.
Example Output: 21

Example Input: Sentence: 'a man walking two dogs down a paved trail'. Count the number of consonants in the given sentence.
Example Output:
21