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

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


[Q]: Sentence: 'a man riding a snowboard down the side of a snow covered slope'. How many words contain the letter 'c' in the sentence.
[A]: 1


[Q]: Sentence: 'a person riding a skate board on a picnic bench'. How many words contain the letter 'a' in the sentence.
[A]:
5