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 man sitting on a bench in front of a boat'. Count the number of vowels in the given sentence.
[A]: 13


[Q]: Sentence: 'a double-decker red bus on a london street'. Count the number of vowels in the given sentence.
[A]: 14


[Q]: Sentence: 'a cow is standing in side of a pen in a building'. Count the number of consonants in the given sentence.
[A]:
21