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 person with a umbrella on a train track'. Count the number of vowels in the given sentence.
Example Output: 13

Example Input: Sentence: 'a very nice looking living room with pretty furniture'. Count the number of vowels in the given sentence.
Example Output: 17

Example Input: Sentence: 'a very close up view of some tasty looking pizza'. Count the number of vowels in the given sentence.
Example Output:
16