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

[Q]: Sentence: 'a man sits on a bench with a dog in lap reading'. How many words contain the letter 'x' in the sentence.
[A]: 0


[Q]: Sentence: 'a lighthouse with birds flying by it at a bay'. How many words contain the letter 'q' in the sentence.
[A]: 0


[Q]: Sentence: 'three young people are playing frisbee on a soccer field'. How many words contain the letter 'u' in the sentence.
[A]:
1