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

Example Input: Sentence: 'a young man dressed as a nun skateboards down the street'. How many words contain the letter 'e' in the sentence.
Example Output: 4

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 toilet a sink and a bad mirror'. How many words contain the letter 'o' in the sentence.
Example Output:
2