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: 'people behind a barricade watch a man ride a motorcycle'. Count the number of consonants in the given sentence.
Example Output: 27

Example Input: Sentence: 'a small group of people standing by a fire hydrant throwing out water'. Count the number of vowels in the given sentence.
Example Output:
20