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

Example Input: Sentence: 'a sandwich shop with cars parked in front of it'. How many words contain the letter 'u' in the sentence.
Example Output: 0

Example Input: Sentence: 'a tabby cat rests on a suitcase set on the floor in a room'. How many words contain the letter 'q' in the sentence.
Example Output: 0

Example Input: Sentence: 'an upstairs bathroom is pictured in this image'. How many words contain the letter 'i' in the sentence.
Example Output:
6