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

Example Input: Sentence: 'a pizza sitting on top of a black cutting board'. How many words contain the letter 'g' in the sentence.
Example Output: 2

Example Input: Sentence: 'a small cat curled up sleeps on what appears to be a table'. How many words contain the letter 'j' in the sentence.
Example Output: 0

Example Input: Sentence: 'two giraffes standing by trees look at the camera'. How many words contain the letter 'w' in the sentence.
Example Output:
1