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

[EX Q]: Sentence: 'a laptop a table a mouse some dirt and water'. How many words contain the letter 'u' in the sentence.
[EX A]: 1

[EX Q]: Sentence: 'a small plain kitchen with a white stove and microwave'. How many words contain the letter 'h' in the sentence.
[EX A]: 3

[EX Q]: Sentence: 'a man in overalls is attending to his horses'. How many words contain the letter 's' in the sentence.
[EX A]:
4