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: 'there are three computers on the desk, two of which are turned on'. Count the number of consonants in the given sentence.
Example Output: 32

Example Input: Sentence: 'a man riding skis while holding two ski poles'. Count the number of consonants in the given sentence.
Example Output: 24

Example Input: Sentence: 'a man on a cell phone looking directly into the camera'. Count the number of vowels in the given sentence.
Example Output:
18