instruction:
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.
question:
Sentence: 'a police officer is standing on a street corner'. Count the number of vowels in the given sentence.
answer:
16


question:
Sentence: 'a zebra with a gazelle in the background in a grassy field'. Count the number of vowels in the given sentence.
answer:
18


question:
Sentence: 'a chef in white chopping vegetables on a board'. Count the number of vowels in the given sentence.
answer:

15