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 couple of horses are standing in a field'. Count the number of vowels in the given sentence.
Example Output: 15

Example Input: Sentence: 'a pizza sitting on a table near a glass and a candle'. Count the number of vowels in the given sentence.
Example Output: 17

Example Input: Sentence: 'a suitcase with wheels sits by itself in the middle of the street'. Count the number of consonants in the given sentence.
Example Output:
34