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: 'screen shot of a man and a horse on television'. Count the number of consonants in the given sentence.
Example Output: 21

Example Input: Sentence: 'a woman covers her head with a blanket'. Count the number of consonants in the given sentence.
Example Output: 19

Example Input: Sentence: 'a person that is holding up a frizbee'. Count the number of vowels in the given sentence.
Example Output:
12