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

[Q]: Sentence: 'a man holding an umbrella in one hand and a cell phone up to his ear in the other'. How many words contain the letter 'x' in the sentence.
[A]: 0


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


[Q]: Sentence: 'a yellow bus is sitting next to a tree'. How many words contain the letter 'f' in the sentence.
[A]:
0