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 on a tennis court is holding a racquet'. Count the number of vowels in the given sentence.
Example Output: 16

Example Input: Sentence: 'a train with several cars is going around a corner'. Count the number of consonants in the given sentence.
Example Output: 24

Example Input: Sentence: 'a bathroom with a large white tub next to a sink'. Count the number of vowels in the given sentence.
Example Output:
15