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: 'dog with collar next to open window in front of building'. Count the number of consonants in the given sentence.
Example Output: 30

Example Input: Sentence: 'a baseball player swings the bat to hit the ball'. Count the number of consonants in the given sentence.
Example Output: 26

Example Input: Sentence: 'the two patio chairs are empty so we can sit down'. Count the number of consonants in the given sentence.
Example Output:
24