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 playing with a dog in a field with a frisbee'. Count the number of vowels in the given sentence.
Example Output: 17

Example Input: Sentence: 'a living room with tv and speakers, sofa and coffee table'. Count the number of vowels in the given sentence.
Example Output: 18

Example Input: Sentence: 'an old-fashioned train sits on rail road tracks'. Count the number of consonants in the given sentence.
Example Output:
24