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

Example Input: Sentence: 'a beautiful woman playing with a small green bird'. How many words contain the letter 't' in the sentence.
Example Output: 2

Example Input: Sentence: 'the train needs to be serviced so it is o the truck'. How many words contain the letter 'n' in the sentence.
Example Output: 2

Example Input: Sentence: 'a bedroom with a computer and a doorway into the attached bathroom'. How many words contain the letter 'd' in the sentence.
Example Output:
4