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

Example Input: Sentence: 'a cat sitting on a wooden chair look at the camera'. How many words contain the letter 'd' in the sentence.
Example Output: 1

Example Input: Sentence: 'a little boy learning to throw a frisbee'. How many words contain the letter 'h' in the sentence.
Example Output: 1

Example Input: Sentence: 'a red truck moving towards a busy highway'. How many words contain the letter 'x' in the sentence.
Example Output:
0