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

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: 'several ties hang from a bar in a closet'. How many words contain the letter 'e' in the sentence.
Example Output: 3

Example Input: Sentence: 'a single piece of pizza is seen on a plate'. How many words contain the letter 'f' in the sentence.
Example Output:
1