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

Example Input: Sentence: 'an elephant stands in the grass near a tree'. How many words contain the letter 'c' in the sentence.
Example Output: 0

Example Input: Sentence: 'a sign reading butt street on the corner of a building with a no parking sign below it'. How many words contain the letter 'h' in the sentence.
Example Output: 2

Example Input: Sentence: 'a person is riding a surfboard with a crowd watching'. How many words contain the letter 'y' in the sentence.
Example Output:
0