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: 'a man in a restaurant makes the v sign with both hands'. How many words contain the letter 'n' in the sentence.
Example Output: 5

Example Input: Sentence: 'a steeple on top of a building with clocks on it'. How many words contain the letter 't' in the sentence.
Example Output:
4