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

Example Input: Sentence: 'a man is water skiing in the ocean'. How many words contain the letter 'c' in the sentence.
Example Output: 1

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 black  motorcycle parked outside of a house'. How many words contain the letter 'z' in the sentence.
Example Output:
0