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 still life photograph of items on a table, including a candle, apples, a vase and coffee'. Count the number of consonants in the given sentence.
Example Output: 42

Example Input: Sentence: 'a young man in a batting stance in a baseball game'. Count the number of vowels in the given sentence.
Example Output:
17