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: 'many people stand on a sidewalk holding umbrellas'. Count the number of consonants in the given sentence.
Example Output: 27

Example Input: Sentence: 'a well-organized game of frisbee is taking place'. Count the number of consonants in the given sentence.
Example Output: 23

Example Input: Sentence: 'several men sitting at a desk with a computer while another man holds a camera upward'. Count the number of consonants in the given sentence.
Example Output:
43