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: 'pedestrians stand on the street between buildings in the city'. Count the number of consonants in the given sentence.

SOLUTION: 34

PROBLEM: Sentence: 'a fire hydrant in which someone put two eyes on it'. Count the number of consonants in the given sentence.

SOLUTION: 24

PROBLEM: Sentence: 'a zebra standing in large empty, dry field'. Count the number of vowels in the given sentence.

SOLUTION:
11