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

Example Input: Sentence: 'zebra eating from the ground near a tree'. How many words contain the letter 'k' in the sentence.
Example Output: 0

Example Input: Sentence: 'people fly kites and relax at a crowded sunlit beach'. How many words contain the letter 'l' in the sentence.
Example Output: 4

Example Input: Sentence: 'cows are riding in the cage in the back of the truck'. How many words contain the letter 'x' in the sentence.
Example Output:
0