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 group of people are attending a wedding'. Count the number of vowels in the given sentence.
Example Output: 15

Example Input: Sentence: 'several plates of food including fried dough and salads'. Count the number of consonants in the given sentence.
Example Output: 29

Example Input: Sentence: 'a girl in thigh high stockings with her hand on her thigh'. Count the number of vowels in the given sentence.
Example Output:
13