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.

[Q]: Sentence: 'a brown dog greeting a lamb on a green field'. Count the number of vowels in the given sentence.
[A]: 14


[Q]: Sentence: 'a man standing on top of a boat next to a man in a straw hat'. Count the number of vowels in the given sentence.
[A]: 18


[Q]: Sentence: 'a rest avenue street sign in front of a cemetary'. Count the number of vowels in the given sentence.
[A]:
16