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

Example Input: Sentence: 'a tabby cat under a white comforter and on top of a cream colored pillow'. How many words contain the letter 'l' in the sentence.
Example Output: 2

Example Input: Sentence: 'a group of people holding kites walking on a beach'. How many words contain the letter 'x' in the sentence.
Example Output: 0

Example Input: Sentence: 'a group of three smart phones sitting on top of a wooden table'. How many words contain the letter 'x' in the sentence.
Example Output:
0