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 living room with tv and speakers, sofa and coffee table'. Count the number of vowels in the given sentence.
18

Sentence: 'a crew of people looking at an airplane'. Count the number of vowels in the given sentence.
15

Sentence: 'many people in the audience are using cell phones and taking pictures'. Count the number of vowels in the given sentence.

24