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 white dog laying on top of a grass covered field'. Count the number of consonants in the given sentence.
24

Sentence: 'people stand and sit in a square in a european city'. Count the number of vowels in the given sentence.
19

Sentence: 'a bear walking on all fours near a fence'. Count the number of vowels in the given sentence.

14