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

Example Input: Sentence: 'a group of people dressed to ski standing in the snow'. How many words contain the letter 'b' in the sentence.
Example Output: 0

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 pole that has several signs attached to it'. How many words contain the letter 'w' in the sentence.
Example Output:
0