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 animal looking through the grates of a gate'. Count the number of consonants in the given sentence.
Example Output: 22

Example Input: Sentence: 'a couple of women are playing video games together'. Count the number of vowels in the given sentence.
Example Output: 19

Example Input: Sentence: 'there are a few airplanes parked on the runway'. Count the number of vowels in the given sentence.
Example Output:
16