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

Example Input: Sentence: 'the boy is in batting stance to waiting'. How many words contain the letter 'h' in the sentence.
Example Output: 1

Example Input: Sentence: 'a man with a surfboard walking across a bridge towards the ocean'. How many words contain the letter 'w' in the sentence.
Example Output: 3

Example Input: Sentence: 'a horsedrawn buggy moving down a clear street'. How many words contain the letter 'u' in the sentence.
Example Output:
1