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: 'two males are seen on the field playing with a frisbee'. Count the number of vowels in the given sentence.
Example Output: 18

Example Input: Sentence: 'a room with various types of clocks and books'. Count the number of consonants in the given sentence.
Example Output: 23

Example Input: Sentence: 'a person walking on a street with a luggage bag'. Count the number of vowels in the given sentence.
Example Output:
15

