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

[Q]: Sentence: 'a woman swinging a tennis racquet in the air'. How many words contain the letter 'z' in the sentence.
[A]: 0


[Q]: Sentence: 'a view from inside a train cart going down a track'. How many words contain the letter 'e' in the sentence.
[A]: 2


[Q]: Sentence: 'a red kite and a blue sky are flying in the sky'. How many words contain the letter 'e' in the sentence.
[A]:
5