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

[Q]: Sentence: 'a woman is posing next to a stop sign'. How many words contain the letter 'u' in the sentence.
[A]: 0


[Q]: Sentence: 'man holding remote control for video game system'. How many words contain the letter 'u' in the sentence.
[A]: 0


[Q]: Sentence: 'a boy riding a bike with a suitcase attached'. How many words contain the letter 's' in the sentence.
[A]:
1