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 pretty young lady greeting a zebra at a zoo'. Count the number of consonants in the given sentence.
Example Output: 21

Example Input: Sentence: 'tennis player crawling on the floor with his tennis racket on a tennis court'. Count the number of consonants in the given sentence.
Example Output: 41

Example Input: Sentence: 'some bread shaped as alligators and a few other shapes'. Count the number of vowels in the given sentence.
Example Output:
18