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: 'some children's toys are sitting by a baby carriage'. Count the number of consonants in the given sentence.
27

Sentence: 'a person that is standing near boxes of pizza'. Count the number of consonants in the given sentence.
23

Sentence: 'a tennis player playing on a tennis court'. Count the number of consonants in the given sentence.

21