In this task, you need to count the number of words in a sentence that contain the given letter

[Q]: Sentence: 'a stop light that is out on a pole'. How many words contain the letter 'z' in the sentence.
[A]: 0


[Q]: Sentence: 'a grown elephant with two baby elephants standing in tall grasses'. How many words contain the letter 'w' in the sentence.
[A]: 3


[Q]: Sentence: 'a black and white clock some paintings and a white wall'. How many words contain the letter 's' in the sentence.
[A]:
2