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 couple of fighter jets fly through the air'. Count the number of vowels in the given sentence.
13

Sentence: 'a police officer is standing on a street corner'. Count the number of vowels in the given sentence.
16

Sentence: 'the building in the city has a lot of signs on it'. Count the number of vowels in the given sentence.

14