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

Example Input: Sentence: 'two elephants are standing by the concrete barrier'. How many words contain the letter 'c' in the sentence.
Example Output: 1

Example Input: Sentence: 'two zebras standing next to each other in the dried grass'. How many words contain the letter 'q' in the sentence.
Example Output: 0

Example Input: Sentence: 'some broccoli and other foods on a plate'. How many words contain the letter 'r' in the sentence.
Example Output:
2