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

Example Input: Sentence: 'a parked blue and white motorcycle with a black seat'. How many words contain the letter 'd' in the sentence.
Example Output: 2

Example Input: Sentence: 'a sleek and pointy fighter jet flying in the sky'. How many words contain the letter 'f' in the sentence.
Example Output: 2

Example Input: Sentence: 'bathtub sink and vanity all white in color'. How many words contain the letter 'l' in the sentence.
Example Output:
2