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

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


[Q]: Sentence: 'unusual round vase with flower stems inside it'. How many words contain the letter 'c' in the sentence.
[A]: 0


[Q]: Sentence: 'two birds walking around outside of a door'. How many words contain the letter 'l' in the sentence.
[A]:
1