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: 'several softball players pause while onlookers chat together in a park'. Count the number of consonants in the given sentence.
Example Output: 37

Example Input: Sentence: 'a man sitting in a chair opening empty luggage'. Count the number of vowels in the given sentence.
Example Output: 15

Example Input: Sentence: 'a man on a snowy street in front of a snow plow'. Count the number of consonants in the given sentence.
Example Output:
23