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 standing on the side of a bicycle'. Count the number of consonants in the given sentence.
Example Output: 19

Example Input: Sentence: 'two people tgat are having fun skiing down a mountain slope'. Count the number of consonants in the given sentence.
Example Output: 29

Example Input: Sentence: 'a bird that is standing on a tree limb'. Count the number of consonants in the given sentence.
Example Output:
19