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 boy swinging his bat towards a baseball'. Count the number of vowels in the given sentence.
12

Sentence: 'a surfer skillfully rides a wave while another surfer watches'. Count the number of consonants in the given sentence.
33

Sentence: 'a pile of chopped meat sitting on a cutting board in a kitchen'. Count the number of vowels in the given sentence.

20