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: 'an image of a bathroom scene with a toilet and sink'. Count the number of vowels in the given sentence.
Example Output: 18

Example Input: Sentence: 'flowers are landscaped to make a design of a clock'. Count the number of consonants in the given sentence.
Example Output: 25

Example Input: Sentence: 'a couple of people sitting on top of a couch next to each other'. Count the number of consonants in the given sentence.
Example Output:
28