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: 'an umbrella is displayed along with several other personal items'. Count the number of vowels in the given sentence.
Example Output: 21

Example Input: Sentence: 'a desktop computer that is sitting on a desk'. Count the number of consonants in the given sentence.
Example Output: 23

Example Input: Sentence: 'the woman is happy to be standing in the kitchen'. Count the number of vowels in the given sentence.
Example Output:
13