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: 'a sleek and pointy fighter jet flying in the sky'. How many words contain the letter 'f' in the sentence.
Example Output: 2

Example Input: Sentence: 'a yellow boat tied to an anchor on the beach'. How many words contain the letter 'm' in the sentence.
Example Output:
0