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

[EX Q]: Sentence: 'some kids are all taking a photograph together'. How many words contain the letter 'e' in the sentence.
[EX A]: 3

[EX Q]: Sentence: 'a man holding a tennis racquet on a tennis court'. How many words contain the letter 'w' in the sentence.
[EX A]: 0

[EX Q]: Sentence: 'a refrigerator up against a wall of a building'. How many words contain the letter 'a' in the sentence.
[EX A]:
6