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

Example Input: Sentence: 'some elephants in a field of grass near a tree'. How many words contain the letter 'k' in the sentence.
Example Output: 0

Example Input: Sentence: 'a stop light that is out on a pole'. How many words contain the letter 'z' in the sentence.
Example Output: 0

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