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

Example Input: Sentence: 'a man sleeping on a park bench then a woman looks at another man with a newspaper over his face on another park bench'. How many words contain the letter 't' in the sentence.
Example Output: 5

Example Input: Sentence: 'a close up of a business sign on a building'. How many words contain the letter 'y' in the sentence.
Example Output: 0

Example Input: Sentence: 'two blue and white electric toothbrushes standing straight up'. How many words contain the letter 'a' in the sentence.
Example Output:
3