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

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

[EX Q]: Sentence: 'people walking down the sidewalk with no turn signs'. How many words contain the letter 'e' in the sentence.
[EX A]: 3

[EX Q]: Sentence: 'a bathroom has interesting tile on the walls'. How many words contain the letter 'x' in the sentence.
[EX A]:
0