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: 'men and women are standing in a row with sheets of paper in their hands'. Count the number of vowels in the given sentence.

SOLUTION: 21

PROBLEM: Sentence: 'some people in line at a small stand'. Count the number of consonants in the given sentence.

SOLUTION: 17

PROBLEM: Sentence: 'a glass vase holding stones, grass and yellow flowers'. Count the number of consonants in the given sentence.

SOLUTION:
30