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

Example Input: Sentence: 'a bed has an empty bag and folded laundry stacked on it'. How many words contain the letter 'm' in the sentence.
Example Output: 1

Example Input: Sentence: 'a large zebra standing out in a grassy field'. How many words contain the letter 'e' in the sentence.
Example Output: 3

Example Input: Sentence: 'a room with a toilet and some towels hanged'. How many words contain the letter 'c' in the sentence.
Example Output:
0