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

Example Input: Sentence: 'a man with a hat on sitting in a car with the door open and a laptop on his lap'. How many words contain the letter 'e' in the sentence.
Example Output: 2

Example Input: Sentence: 'a person eating a slice of pizza on a table'. How many words contain the letter 'z' in the sentence.
Example Output: 1

Example Input: Sentence: 'a airplane is seen at the airport with other airplanes'. How many words contain the letter 'z' in the sentence.
Example Output:
0