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: 'some people are looking at two giraffes at a zoo'. Count the number of consonants in the given sentence.
20

Sentence: 'a bird pecks its way through some vegetation'. Count the number of consonants in the given sentence.
23

Sentence: 'a close up of a female tennis player holding a racket'. Count the number of vowels in the given sentence.

18