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 is a female tennis player on the court'. Count the number of consonants in the given sentence.
Example Output: 21

Example Input: Sentence: 'the sandwiches on the picnic blanket are cut in half'. Count the number of vowels in the given sentence.
Example Output: 15

Example Input: Sentence: 'an empty plastic container and a plastic fork left on a bench'. Count the number of consonants in the given sentence.
Example Output:
33