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.

Sentence: 'a snowboarder does a jump on a dark course'. Count the number of vowels in the given sentence.
15

Sentence: 'a baseball team meets at the pitcher's mound to talk'. Count the number of consonants in the given sentence.
26

Sentence: 'a man sitting in a chair opening empty luggage'. Count the number of consonants in the given sentence.

23