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

[EX Q]: Sentence: 'a young man attempting to fly a kite on a forest hillside'. How many words contain the letter 'f' in the sentence.
[EX A]: 2

[EX Q]: Sentence: 'an elephant near a man sitting down'. How many words contain the letter 'y' in the sentence.
[EX A]: 0

[EX Q]: Sentence: 'a couple standing on an old building top'. How many words contain the letter 'u' in the sentence.
[EX A]:
2