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: 'two traffic signs are pictured in front of a sky background'. Count the number of vowels in the given sentence.

Answer: 16


Question: Sentence: 'a jetliner sitting on top of an airport tarmac'. Count the number of vowels in the given sentence.

Answer: 15


Question: Sentence: 'two men are standing next to a brownish black elephant'. Count the number of vowels in the given sentence.

Answer:
15