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: 'two suitcases are stacked on each other and one is black while the other is brown and yellow'. Count the number of consonants in the given sentence.
Example Output: 46

Example Input: Sentence: 'people enjoying the slopes at a ski resort on a sunny day'. Count the number of vowels in the given sentence.
Example Output: 18

Example Input: Sentence: 'a elephant walking a deep water to the other side'. Count the number of vowels in the given sentence.
Example Output:
17