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.

[EX Q]: Sentence: 'an old train next to some empty train tracks'. Count the number of vowels in the given sentence.
[EX A]: 12

[EX Q]: Sentence: 'two balls of yard and needles on a table'. Count the number of vowels in the given sentence.
[EX A]: 12

[EX Q]: Sentence: 'this is one corner of a loving that contains a bookshelf with a lot of books'. Count the number of vowels in the given sentence.
[EX A]:
24

