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

Example Input: Sentence: 'a man in mid swing of a baseball bat'. How many words contain the letter 'k' in the sentence.
Example Output: 0

Example Input: Sentence: 'the bowl on the table is full of cut fruit'. How many words contain the letter 'b' in the sentence.
Example Output: 2

Example Input: Sentence: 'a girl with arms crossed leaning on counter over a rectangular pizza by a wall calendar and containers'. How many words contain the letter 'm' in the sentence.
Example Output:
1