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: 'the sandwiches on the picnic blanket are cut in half'. Count the number of vowels in the given sentence.
Example Output: 15

Example Input: Sentence: 'a teenager on a blue skateboard has his arm in the air'. Count the number of consonants in the given sentence.
Example Output: 23

Example Input: Sentence: 'a man with beard and glasses showing a plate of pizza and vegetables'. Count the number of consonants in the given sentence.
Example Output:
35