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

[EX Q]: Sentence: 'a man in a restaurant makes the v sign with both hands'. How many words contain the letter 'n' in the sentence.
[EX A]: 5

[EX Q]: Sentence: 'a couple of zebras are standing in a pin'. How many words contain the letter 'a' in the sentence.
[EX A]: 5

[EX Q]: Sentence: 'a whole pizza on a table next to a wall'. How many words contain the letter 'r' in the sentence.
[EX A]:
0