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 woman with a green striped umbrella crosses a street past a brightly painted truck'. Count the number of vowels in the given sentence.
Example Output: 24

Example Input: Sentence: 'groups of people in a field sitting down, standing and walking, with tent areas in the background'. Count the number of vowels in the given sentence.
Example Output: 28

Example Input: Sentence: 'an attractive young woman on a motorcycle with her friend close by'. Count the number of vowels in the given sentence.
Example Output:
20

