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 sleeping on a chair'. Count the number of consonants in the given sentence.
Example Output: 15

Example Input: Sentence: 'the woman in a blue shirt is riding a horse'. Count the number of consonants in the given sentence.
Example Output: 20

Example Input: Sentence: 'a row of motorcycles parked as people congregate in the street'. Count the number of consonants in the given sentence.
Example Output:
32