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

Example Input: Sentence: 'a living room filled with furniture and a large wooden shelf'. How many words contain the letter 'e' in the sentence.
Example Output: 5

Example Input: Sentence: 'a display of bananas on rack with various aisle in background'. How many words contain the letter 'x' in the sentence.
Example Output: 0

Example Input: Sentence: 'the man is laying with a a baby horse on a bed'. How many words contain the letter 'n' in the sentence.
Example Output:
3