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 teenager on a blue skateboard has his arm in the air'. Count the number of consonants in the given sentence.
23

Sentence: 'a skier flying down a snow covered hill into a pool'. Count the number of consonants in the given sentence.
25

Sentence: 'a street sign on a snowy surface with buildings in the background'. Count the number of consonants in the given sentence.

35