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 solo snowboarder soars down a snowy mountainside'. Count the number of consonants in the given sentence.
25

Sentence: 'an old design kitchen with a long counter and brown appliances'. Count the number of vowels in the given sentence.
18

Sentence: 'an older gentleman sitting on a sidewalk playing guitar'. Count the number of vowels in the given sentence.

18