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

[Q]: Sentence: 'a stop sign casting a shadow of a sign that says war'. How many words contain the letter 'y' in the sentence.
[A]: 1


[Q]: Sentence: 'a man holding a tennis racquet on a tennis court'. How many words contain the letter 'w' in the sentence.
[A]: 0


[Q]: Sentence: 'a view of a street with blurry cars passing by at night'. How many words contain the letter 'e' in the sentence.
[A]:
2