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

[EX Q]: Sentence: 'a batter sings his bat at a baseball game'. How many words contain the letter 'h' in the sentence.
[EX A]: 1

[EX Q]: Sentence: 'a man holding a frisbee above a crowd of young men'. How many words contain the letter 'i' in the sentence.
[EX A]: 2

[EX Q]: Sentence: 'a small white dog standing next to a bedroom'. How many words contain the letter 'b' in the sentence.
[EX A]:
1