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

[Q]: Sentence: 'there is a person awaiting to cross this street'. How many words contain the letter 'a' in the sentence.
[A]: 2


[Q]: Sentence: 'a road cut off by police barricade tape'. How many words contain the letter 'x' in the sentence.
[A]: 0


[Q]: Sentence: 'carrots lettuce broccoli and spinach all stacked on top of one another'. How many words contain the letter 'e' in the sentence.
[A]:
4