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.

Sentence: 'two traffic signs are pictured in front of a sky background'. Count the number of vowels in the given sentence.
16

Sentence: 'the door on a small fridge is open'. Count the number of consonants in the given sentence.
16

Sentence: 'some boxes of frozen pizzas are in the store'. Count the number of vowels in the given sentence.

15