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

[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 holding a racquet hits a tennis ball'. How many words contain the letter 'v' in the sentence.
[EX A]: 0

[EX Q]: Sentence: 'some zebras dirt plants and bushes'. How many words contain the letter 'r' in the sentence.
[EX A]:
2