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 skier flying down a snow covered hill into a pool'. Count the number of consonants in the given sentence.
Example Output: 25

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: 'image of a crosswalk sign in front of a traffic light'. Count the number of consonants in the given sentence.
Example Output:
28