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

[EX Q]: Sentence: 'a business man is talking on the phone'. How many words contain the letter 'e' in the sentence.
[EX A]: 3

[EX Q]: Sentence: 'a microwaved broccoli and cheese dish and a spoon'. How many words contain the letter 'n' in the sentence.
[EX A]: 3

[EX Q]: Sentence: 'a group of people with umbrellas are walking across a bridge'. How many words contain the letter 'k' in the sentence.
[EX A]:
1