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

Example Input: Sentence: 'three people that are looking at a monitor on the left side of the photo'. How many words contain the letter 'd' in the sentence.
Example Output: 1

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: 'a picture of a plane in the air'. How many words contain the letter 'l' in the sentence.
Example Output:
1