You will be given a definition of a task first, then some input of the task.
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 pizza pie covered with whole tomatoes, sliced meat, cheese, and other herbs'. Count the number of vowels in the given sentence.
Output:
26