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

Example Input: Sentence: 'some kids are all taking a photograph together'. How many words contain the letter 'e' in the sentence.
Example Output: 3

Example Input: Sentence: 'a picture of some horses and a person in the street'. How many words contain the letter 'r' in the sentence.
Example Output: 4

Example Input: Sentence: 'two laptop computers side by side on a tiled countertop'. How many words contain the letter 'x' in the sentence.
Example Output:
0