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: 'cars parked on the side of the road beside a fire hydrant'. How many words contain the letter 'p' in the sentence.
Example Output: 1

Example Input: Sentence: 'a nice cake with many colors put on it'. How many words contain the letter 'k' in the sentence.
Example Output:
1