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

[Q]: Sentence: 'the children are playing on the beach  next to the water'. How many words contain the letter 'h' in the sentence.
[A]: 5


[Q]: Sentence: 'a man on a motorcycle towing another man on a skateboard'. How many words contain the letter 'n' in the sentence.
[A]: 6


[Q]: Sentence: 'a man fliped up side down while wind surfing'. How many words contain the letter 'f' in the sentence.
[A]:
2