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.

[Q]: Sentence: 'convention with people standing at table with refreshments'. Count the number of vowels in the given sentence.
[A]: 17


[Q]: Sentence: 'there is a man standing on the train'. Count the number of consonants in the given sentence.
[A]: 18


[Q]: Sentence: 'a horse pulling a wagon down a street'. Count the number of consonants in the given sentence.
[A]:
18