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: 'people riding elephants in a body of water'. Count the number of consonants in the given sentence.
Example Output: 21

Example Input: Sentence: 'a cat kneeling in front of a stuffed bear and a kids book'. Count the number of vowels in the given sentence.
Example Output: 18

Example Input: Sentence: 'a person that is on some skiies in some snow'. Count the number of consonants in the given sentence.
Example Output:
20