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.
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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 brown dog greeting a lamb on a green field'. Count the number of vowels in the given sentence.

Answer: 14


Question: Sentence: 'two giraffes standing together beside a fence and wall'. Count the number of vowels in the given sentence.

Answer:
17