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

[EX Q]: Sentence: 'a pile of stuffed brown teddy bears wearing clothing'. How many words contain the letter 'w' in the sentence.
[EX A]: 2

[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: 'silver train car sitting on tracks in an open desert'. How many words contain the letter 'z' in the sentence.
[EX A]:
0