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

[EX Q]: Sentence: 'people holding a surfboard and walking down the beach'. How many words contain the letter 'n' in the sentence.
[EX A]: 4

[EX Q]: Sentence: 'some people are sitting around a black table'. How many words contain the letter 'v' in the sentence.
[EX A]: 0

[EX Q]: Sentence: 'a group of lego men standing on top of a computer keyboard'. How many words contain the letter 'l' in the sentence.
[EX A]:
1