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 giraffe wanders through the plains, searching for a tall tree to graze on'. Count the number of consonants in the given sentence.
Example Output: 38

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: 'a man in white shorts is serving in tennis'. Count the number of vowels in the given sentence.
Example Output:
12