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

[EX Q]: Sentence: 'the tennis player returns a serve of the tennis ball'. How many words contain the letter 'q' in the sentence.
[EX A]: 0

[EX Q]: Sentence: 'a bus station full of people walking on the side walk'. How many words contain the letter 'q' in the sentence.
[EX A]: 0

[EX Q]: Sentence: 'stuffed animals placed in front of a white background'. How many words contain the letter 'h' in the sentence.
[EX A]:
1