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

Example Input: Sentence: 'the view of a pier throw rain covered window'. How many words contain the letter 'p' in the sentence.
Example Output: 1

Example Input: Sentence: 'a construction worker smashes away at the roof of a building'. How many words contain the letter 'b' in the sentence.
Example Output: 1

Example Input: Sentence: 'a hot dog and french fries served in a car tray'. How many words contain the letter 'i' in the sentence.
Example Output:
2