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 brown and white dog chewing on a plastic bottle'. Count the number of vowels in the given sentence.
14

Sentence: 'a small bathroom seen through an open door showing pedestal sink and a rust-stained toilet'. Count the number of vowels in the given sentence.
29

Sentence: 'giraffes and zebra watching a zookeeper in their enclosure'. Count the number of vowels in the given sentence.

21