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: '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 woman standing in a kitchen wearing blue gloves'. Count the number of consonants in the given sentence.
Example Output: 25

Example Input: Sentence: 'a person on a surfboard riding an ocean wave'. Count the number of consonants in the given sentence.
Example Output:
20