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

Example Input: Sentence: 'a sandwich shop with cars parked in front of it'. How many words contain the letter 'u' in the sentence.
Example Output: 0

Example Input: Sentence: 'a room with a small light in the middle with a computer'. How many words contain the letter 's' in the sentence.
Example Output: 1

Example Input: Sentence: 'two chefs preparing a meal in the kitchen'. How many words contain the letter 'k' in the sentence.
Example Output:
1