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

Example Input: Sentence: 'three zebras are shown in a black and white photo'. How many words contain the letter 'y' in the sentence.
Example Output: 0

Example Input: Sentence: 'a cat is laying in a piece of luggage'. How many words contain the letter 'p' in the sentence.
Example Output: 1

Example Input: Sentence: 'a person sitting with a bunch of stuffed animals in the grass'. How many words contain the letter 'z' in the sentence.
Example Output:
0