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

Example Input: Sentence: 'a cat is walking on a wooden deck in the snow'. How many words contain the letter 'q' in the sentence.
Example Output: 0

Example Input: Sentence: 'a man in a helmet leans on his motorcycle'. How many words contain the letter 'n' in the sentence.
Example Output: 4

Example Input: Sentence: 'a surfboarded is riding a wave on his surfboard'. How many words contain the letter 'k' in the sentence.
Example Output:
0