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: 'street signs at an intersection on a day without clouds in the sky'. Count the number of consonants in the given sentence.
Example Output: 34

Example Input: Sentence: 'a man riding on the back of a horse'. Count the number of vowels in the given sentence.
Example Output: 11

Example Input: Sentence: 'blurred image of a person riding a long board on a sidewalk'. Count the number of vowels in the given sentence.
Example Output:
20