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 giraffe reaches with its tongue for a hand holding food'. Count the number of consonants in the given sentence.
Example Output: 28

Example Input: Sentence: 'a man is holding up a snowboard with the word "source" written on it'. Count the number of consonants in the given sentence.
Example Output: 33

Example Input: Sentence: 'a white vase holding onto some little purple flowers'. Count the number of consonants in the given sentence.
Example Output:
27