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 four lane street in the suburbs'. Count the number of consonants in the given sentence.
16

Sentence: 'the two  grey elephants was trailing each other across the road'. Count the number of vowels in the given sentence.
19

Sentence: 'a lady is riding a bicycle while talking on a cell phone'. Count the number of vowels in the given sentence.

17