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: 'a pretty young lady greeting a zebra at a zoo'. Count the number of consonants in the given sentence.
21

Sentence: 'a man holding and staring intently at an apple'. Count the number of consonants in the given sentence.
25

Sentence: 'a green and silver train passing by a building'. Count the number of vowels in the given sentence.

14