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

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: 'two hotdogs on with various toppings and a drink on a counter'. How many words contain the letter 'w' in the sentence.
Example Output: 2

Example Input: Sentence: 'a boy that is on his skateboard on a ramp'. How many words contain the letter 'k' in the sentence.
Example Output:
1