TASK DEFINITION: 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.
PROBLEM: Sentence: 'a neon sign on the wall for a hamburger restaurant'. Count the number of consonants in the given sentence.

SOLUTION: 25

PROBLEM: Sentence: 'this picture shows a busy city crosswalk scene'. Count the number of consonants in the given sentence.

SOLUTION: 27

PROBLEM: Sentence: 'a person on a skateboard up in the air'. Count the number of consonants in the given sentence.

SOLUTION:
16