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

Example Input: Sentence: 'a woman surfer is on an ocean wave'. How many words contain the letter 's' in the sentence.
Example Output: 2

Example Input: Sentence: 'black and white photo of old man riding a motorcycle'. How many words contain the letter 'n' in the sentence.
Example Output: 3

Example Input: Sentence: 'a room with a large wooden table next to a chair'. How many words contain the letter 'f' in the sentence.
Example Output:
0