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

[EX Q]: Sentence: 'a kitchen in a camp with gear and coats laid out'. How many words contain the letter 'i' in the sentence.
[EX A]: 4

[EX Q]: Sentence: 'a man srufing the waves on a board in front of 3 tall pillars'. How many words contain the letter 'n' in the sentence.
[EX A]: 5

[EX Q]: Sentence: 'a bus full of people are sitting at a bus stop'. How many words contain the letter 'z' in the sentence.
[EX A]:
0