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 man in a cowboy hat attempts to throw a disc shaped object'. Count the number of consonants in the given sentence.
Example Output: 31

Example Input: Sentence: 'hot pizza, ready to be sliced and eaten, sitting in the middle of a large table'. Count the number of vowels in the given sentence.
Example Output: 25

Example Input: Sentence: 'a man that is standing in front of a television'. Count the number of vowels in the given sentence.
Example Output:
15