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 woman sitting at a table in a restaurant'. Count the number of consonants in the given sentence.
Example Output: 19

Example Input: Sentence: 'a baseball game in action with the pitcher throwing the ball'. Count the number of vowels in the given sentence.
Example Output: 18

Example Input: Sentence: 'a metal toilet sitting in a bathroom with a hand rail'. Count the number of vowels in the given sentence.
Example Output:
18