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 truck dumping soil in a rural area'. Count the number of vowels in the given sentence.
13

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.
21

Sentence: 'a horseback rider surrounded by people on foot and an asian umbrella go down the street'. Count the number of vowels in the given sentence.

29