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

Example Input: Sentence: 'a cat sitting on the arm of a chair'. How many words contain the letter 'g' in the sentence.
Example Output: 1

Example Input: Sentence: 'a couple of zebras and antelopes captured on a wildlife camera'. How many words contain the letter 'm' in the sentence.
Example Output: 1

Example Input: Sentence: 'an elephant walking around a desert area with trees blocking the view'. How many words contain the letter 'm' in the sentence.
Example Output:
0