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 double-decker red bus on a london street'. Count the number of vowels in the given sentence.

Answer: 14


Question: Sentence: 'a large jetliner flying through a sky filled with clouds'. Count the number of vowels in the given sentence.

Answer: 15


Question: Sentence: 'a tawny cat naps on top of a piece of machinery or electronics'. Count the number of vowels in the given sentence.

Answer:
20