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

[EX Q]: Sentence: 'a green and white street sign on a pole and a light'. How many words contain the letter 's' in the sentence.
[EX A]: 2

[EX Q]: Sentence: 'some people at a table with food and drinks'. How many words contain the letter 'n' in the sentence.
[EX A]: 2

[EX Q]: Sentence: 'a man with a snowboard rolling on ice'. How many words contain the letter 'j' in the sentence.
[EX A]:
0