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

[EX Q]: Sentence: 'a boy is doing a trick with his skateboard'. How many words contain the letter 'y' in the sentence.
[EX A]: 1

[EX Q]: Sentence: 'a large truck driving on a crowded street'. How many words contain the letter 'i' in the sentence.
[EX A]: 1

[EX Q]: Sentence: 'a man in black shirt jumping on a skateboard'. How many words contain the letter 'z' in the sentence.
[EX A]:
0