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

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

[EX Q]: Sentence: 'a water fountain sitting in the middle of a bathroom'. How many words contain the letter 'h' in the sentence.
[EX A]: 2

[EX Q]: Sentence: 'a plane flying over the water off the coast'. How many words contain the letter 'g' in the sentence.
[EX A]:
1