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.

Example Input: Sentence: 'two children siting on a small bed in a room'. Count the number of consonants in the given sentence.
Example Output: 22

Example Input: 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.
Example Output: 29

Example Input: Sentence: 'a flock of ducks on the water's surface'. Count the number of vowels in the given sentence.
Example Output:
11