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 cat in a tie sits on the couch'. How many words contain the letter 't' in the sentence.
Example Output: 4

Example Input: Sentence: 'a man skating down a stair rail in front of a bunch of people'. How many words contain the letter 'c' in the sentence.
Example Output:
1