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 artistic vase with a depiction of an octopus on it'. Count the number of vowels in the given sentence.
Example Output: 19

Example Input: Sentence: 'an orange and white cat lays on tan carpet with his nose on a black cell phone'. Count the number of consonants in the given sentence.
Example Output: 39

Example Input: Sentence: 'a man in a wet suit riding a surfboard'. Count the number of vowels in the given sentence.
Example Output:
13