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 group of people standing around a tv'. Count the number of vowels in the given sentence.
13

Sentence: 'a brown dog greeting a lamb on a green field'. Count the number of vowels in the given sentence.
14

Sentence: 'a cow standing in a field with a tag in its ear'. Count the number of vowels in the given sentence.

15