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

Example Input: Sentence: 'a plate has many different types of food on it'. How many words contain the letter 'r' in the sentence.
Example Output: 1

Example Input: Sentence: 'a little boy that is sitting near two birds'. How many words contain the letter 'm' in the sentence.
Example Output: 0

Example Input: Sentence: 'looks like a man in black crouching in the snow'. How many words contain the letter 'v' in the sentence.
Example Output:
0