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

Example Input: Sentence: 'person standing in the grass striking a baseball with a bat'. How many words contain the letter 's' in the sentence.
Example Output: 5

Example Input: Sentence: 'a red car parked with a gas pump inserted into it'. How many words contain the letter 'l' in the sentence.
Example Output: 0

Example Input: Sentence: 'the meal is prepared on the table ready to eat'. How many words contain the letter 'f' in the sentence.
Example Output:
0