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

Example Input: Sentence: 'a persons desk with a computer and many books in a case behind it'. How many words contain the letter 'd' in the sentence.
Example Output: 3

Example Input: Sentence: 'living room that has boxes packed for moving'. How many words contain the letter 'u' in the sentence.
Example Output: 0

Example Input: Sentence: 'a baby with something in its mouth sitting on a wooden floor'. How many words contain the letter 'e' in the sentence.
Example Output:
2