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: '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: 'elephant herd, in a line, walking across savanna'. Count the number of vowels in the given sentence.
15

Sentence: 'a woman is sitting at a desk at home'. Count the number of vowels in the given sentence.

12