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

Example Input: Sentence: 'skate boarder trying to maintain his balance during stunt'. How many words contain the letter 'w' in the sentence.
Example Output: 0

Example Input: Sentence: 'a man that is sitting at a table with a bowl'. How many words contain the letter 'k' in the sentence.
Example Output: 0

Example Input: Sentence: 'a dog jumping in the air over a number of people'. How many words contain the letter 'v' in the sentence.
Example Output:
1