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

Answer: 14


Question: Sentence: 'a man on a green field throwing a baseball'. Count the number of vowels in the given sentence.

Answer: 14


Question: Sentence: 'a young man in a batting stance in a baseball game'. Count the number of vowels in the given sentence.

Answer:
17


