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: 'little boy stands atop the flatbed truck parked in the field'. Count the number of vowels in the given sentence.
Example Output: 16

Example Input: Sentence: 'a vase with unopened flowers in ice'. Count the number of vowels in the given sentence.
Example Output: 13

Example Input: Sentence: 'signs and a baracade blocking off a street with people on the other side'. Count the number of vowels in the given sentence.
Example Output:
23