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 man holding and staring intently at an apple'. Count the number of consonants in the given sentence.
Example Output: 25

Example Input: Sentence: 'this is a man using his phone and walking'. Count the number of consonants in the given sentence.
Example Output: 21

Example Input: Sentence: 'a person on a small boat in a body of water'. Count the number of vowels in the given sentence.
Example Output:
14