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: 'two zebras that are standing in the grass'. Count the number of vowels in the given sentence.

SOLUTION: 11

PROBLEM: Sentence: 'a fedex truck sitting in the street with no driver'. Count the number of consonants in the given sentence.

SOLUTION: 27

PROBLEM: Sentence: 'a red double-decker bus drives tourists through a large city'. Count the number of consonants in the given sentence.

SOLUTION:
31