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

Example Input: Sentence: 'a man in a tie that is looking to the side'. How many words contain the letter 'm' in the sentence.
Example Output: 1

Example Input: Sentence: 'a man is sitting in a cubicle with a computer'. How many words contain the letter 'a' in the sentence.
Example Output: 4

Example Input: Sentence: 'fish broccoli and rice is on a plate'. How many words contain the letter 'z' in the sentence.
Example Output:
0