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 pole with a two street signs and a stop sign mounted to a pole'. Count the number of consonants in the given sentence.
30

Sentence: 'a baseball player swings the bat to hit the ball'. Count the number of consonants in the given sentence.
26

Sentence: 'a herd of cows on a farm in grassy field'. Count the number of consonants in the given sentence.

20