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

[EX Q]: Sentence: 'green bananas or plantains hang in a bunch on a tree'. How many words contain the letter 'm' in the sentence.
[EX A]: 0

[EX Q]: Sentence: 'a clock tower next to a building in a city'. How many words contain the letter 'a' in the sentence.
[EX A]: 3

[EX Q]: Sentence: 'ancient pottery being displayed on an exhibit case'. How many words contain the letter 's' in the sentence.
[EX A]:
2