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

[EX Q]: Sentence: 'a living room filled with furniture and a large wooden shelf'. How many words contain the letter 'e' in the sentence.
[EX A]: 5

[EX Q]: Sentence: 'a black sign that is standing in the grass'. How many words contain the letter 'f' in the sentence.
[EX A]: 0

[EX Q]: Sentence: 'a clock tower on a building of a business establishment'. How many words contain the letter 'f' in the sentence.
[EX A]:
1