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

[EX Q]: Sentence: 'a very big nice looking kitchen that is well lit'. How many words contain the letter 'r' in the sentence.
[EX A]: 1

[EX Q]: Sentence: 'a man and a woman stand under an umbrella'. How many words contain the letter 's' in the sentence.
[EX A]: 1

[EX Q]: Sentence: 'a picture of a bunkbed that is very clean'. How many words contain the letter 'a' in the sentence.
[EX A]:
4