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

Example Input: Sentence: 'a pair of zebras looking towards the camera in a barren field'. How many words contain the letter 'u' in the sentence.
Example Output: 0

Example Input: Sentence: 'some people are sitting around a black table'. How many words contain the letter 'v' in the sentence.
Example Output: 0

Example Input: Sentence: 'two clocks are hanging in a doctors office'. How many words contain the letter 'c' in the sentence.
Example Output:
3