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

[EX Q]: Sentence: 'people are parked along side the road by pay here signs'. How many words contain the letter 'a' in the sentence.
[EX A]: 5

[EX Q]: Sentence: 'a bunch of people in a big field filled with bananas'. How many words contain the letter 'r' in the sentence.
[EX A]: 0

[EX Q]: Sentence: 'an asian man ad woman on their cell phones'. How many words contain the letter 'i' in the sentence.
[EX A]:
2