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: 'sandwiches and sides are arranged on a table'. Count the number of vowels in the given sentence.
Example Output: 15

Example Input: Sentence: 'many people on some grass and some are flying kites'. Count the number of consonants in the given sentence.
Example Output: 26

Example Input: Sentence: 'a tennis player is returning the ball on the court'. Count the number of consonants in the given sentence.
Example Output:
26