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

Example Input: Sentence: 'a cat lying on an open laptop that is on a bed'. How many words contain the letter 'y' in the sentence.
Example Output: 1

Example Input: Sentence: 'a pizza pie is on a wooden serving tray'. How many words contain the letter 's' in the sentence.
Example Output: 2

Example Input: Sentence: 'the bathroom is in white and shades of green with green plants'. How many words contain the letter 'x' in the sentence.
Example Output:
0