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: 'a bird with a unique black and white beak next to other birds'. Count the number of vowels in the given sentence.
Example Output: 19

Example Input: Sentence: 'a zebra with a gazelle in the background in a grassy field'. Count the number of vowels in the given sentence.
Example Output: 18

Example Input: Sentence: 'several toilets some without lids are sitting on the ground outside'. Count the number of consonants in the given sentence.
Example Output:
33