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

Sentence: 'a white dog laying on top of a grass covered field'. Count the number of consonants in the given sentence.
24

Sentence: 'a grey and white striped tabby cat laying inside a black suitcase'. Count the number of vowels in the given sentence.

20