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

[Q]: Sentence: 'a man in mid swing of a baseball bat'. How many words contain the letter 'k' in the sentence.
[A]: 0

[Q]: Sentence: 'a man herding brown colored animals with a dog'. How many words contain the letter 'z' in the sentence.
[A]: 0

[Q]: Sentence: 'two people walking down a street with a child in it'. How many words contain the letter 'u' in the sentence.
[A]:
0