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

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

[EX Q]: Sentence: 'a very big nice looking kitchen that is well lit'. How many words contain the letter 'r' in the sentence.
[EX A]: 1

[EX Q]: Sentence: 'a cat lying on the chair with its eyes wide open'. How many words contain the letter 'c' in the sentence.
[EX A]:
2