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

Example Input: Sentence: 'a young person flying through the air while riding a skateboard'. How many words contain the letter 'd' in the sentence.
Example Output: 2

Example Input: Sentence: 'a bird is standing on the edge of a book'. How many words contain the letter 'o' in the sentence.
Example Output: 3

Example Input: Sentence: 'an oddly tied tie on a pink shirt'. How many words contain the letter 'l' in the sentence.
Example Output:
1