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 desk sitting against a wall that has a picture on it'. Count the number of vowels in the given sentence.
Example Output: 17

Example Input: Sentence: 'a couple cutting their wedding cake together with a knife in their hands'. Count the number of vowels in the given sentence.
Example Output: 23

Example Input: Sentence: 'a bathroom with two sinks and a black tub'. Count the number of vowels in the given sentence.
Example Output:
11