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 little kitten playing on a scratching mat'. Count the number of consonants in the given sentence.
24

Sentence: 'a living room filled with furniture and a small tv'. Count the number of vowels in the given sentence.
15

Sentence: 'a person holding a camera in front of a bus'. Count the number of consonants in the given sentence.

20