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 baby boy with a banana in his mouth'. Count the number of consonants in the given sentence.
Example Output: 17

Example Input: Sentence: 'a toddler boy holding a frisbee on the beach'. Count the number of vowels in the given sentence.
Example Output: 14

Example Input: Sentence: 'a white cow surrounded by many dark cows inside a coral'. Count the number of consonants in the given sentence.
Example Output:
28