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

[EX Q]: Sentence: 'a mirror above a bathroom sink next to a window'. How many words contain the letter 'v' in the sentence.
[EX A]: 1

[EX Q]: Sentence: 'a woman is smiling next to a dog'. How many words contain the letter 'j' in the sentence.
[EX A]: 0

[EX Q]: Sentence: 'a group of people on motorcycles performing a stunt'. How many words contain the letter 'r' in the sentence.
[EX A]:
3